SCIENTIFIC ABSTRACT SHARVIN,, G. - SHASHENKOVA, I.I.

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• Collection: Scientific Abstracts
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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

IST AND ?NO ORDERS D AH&O 47TH '6vLF
PROCEWS ARD PROFFRTIES 1"PEP
1 Gray Tio, Down to
ShtE rimen;;;;t ot the
1-32, (4).
*11U~L "'Y
of the magnetic moment of grey tin powder in
Englis
weak magnetic field at tempernturcs down to 1-32* K., it is abown that, rhove
this temperature, no tivity.occurs. In atronger fields, a small
magnetic momenb in oe", -Me to the presence of a small amoitnt of irbito
tin. which may be domonaLratcd by J-raX oxperimentm. It is concluded
that groy tin la not a nupraconductar.-O. V. It.

GANTMAM'a, V. F.;-SHARVIN, Yu. V.
"Temperature dependence of the electron mean free path in tin at liquid helium
temperature."
report presented at the Ah Intl Coaf on Low Temperature Physics, Columbus, Ohio,
31 AUg-4 Sep 64.
Inst for Physical Problems, AS USSR

SHARVINP Yu.V.; GAWMKHER, V.F.
Growing metal single crystals In optically polished molds.
Prib. I tekh. eksp. 8 no.6sl65-167 N-D 163. (MIRA 17:6)
1. Institut fizicheskikh problem AN SSSR.

SE111.11111121 ) YU. V.
Yu, V. Sharvin, 1. A. Shalnikov and 11. A. Tumanov
"Superconductivity of Na in NH 311 published In Corrp Rend. Acad. Sci. URSS (56)
35-7, 1941

0 a
l
~ r
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is
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.
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_

'On Um Twdm of PrmW MdaMe Idnimm G. H. 7helanny and Vu. V"\ I-so

6 Sha ' (Zhar. Fi:. Kkim.. IMP, 19, 13). 160-166).-Iln Humiron.1 The
I
1
1
IM-7-
0 1 orientatitm of veknjum
1
-
~ _ler a P__ of 7
F As

0 tonsfaq,en), at 133'C. for I hr., annealed at 210 7 C. for
lo

:
0
4
24 hr., was studied in a Debye :Smem M C mA (ion and imn filters. It
"
2ia
le
M
ek-
wrom found that in the case of tr
m
) planes tend to lie in a
tgonal l
(1 1
00 plam Imri-Irmilicular to the oompreaden axis. involmective of the sulm-quent
l
anura
ing treatment. 71is result can be rxpWned by amuming thAL the
*0 slipping lance of mck-nium am the *&me thaw of w1lurium, i.c. 1010)
!X 0
00 idanvs.
. K. zoo
00 u go*

so*

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be 4~

01*4 091FOLLUPOCAL LIMIATUOR CLASUPKATOGO

u a, 10 41
a g 0 3 T ZA
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1
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6 404940 0 a a of 0 * .
ease 0 0 0 0 0 a 0 6 4 0 0 0 0 so w
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6
T
m
' i 0 0 0 0 0 a 0 0 0 a 0 0 0 0 0 lille * 0 0 0 0 * * 4 0 0 * 0 a 0 0 0
a
* 61

-SHARVIN,-Yu.--V., Cand. Physicomath Sci.- - -
Dissertation: "Investigation of the Depth of Magnetic Field Penetration into a Solid
Superconductor." Inst. of Physical Problems, Acad Sci USSR. 21 Nov 47.
SO: VechenWaya Moskva, Nov 1947 (Project #17836)

Z=IVIII, J. v.
USSR/Superconductivity
Sodium
Ammonia
PA [':T62
Apr IM7
110n the Superconductivity of Solutions of Sodium in Ammonia," K. A. Tumanov,
A. I. Shainikov, J. V. Sharvin, 3 PP
IICR Acad Scilt Vol LVI, N'o 1
Experiments to check the results reported by Dgj 6n superconductivity in sodium-
ammonia solutions in the range of 90 - 120 0 K.
8T82

F. ) Trj . V .
42033: TILMANOV, K. A.; SHARVIN, YU. V. - Issledovanie sil, neobkhodinykh dlya peremesheniya
granitsy mezhda sverk!Trovodyashchey i normallnoy fazami. Pistmo v pedakts-iYU.
Zhurnal eksperim. I teoret. Fiziki, 1945, Byp. 11, s. 1o-56.
SO: Letopis' Zhurnaltnykh Statey, Vol- 47) 1948-

- %It ~
r I A -AL
-A _1Y. ~,!c v!k
;0c isit
it u m 0 a 0 a 61 a to a *me
t_& -A-A 0 0 A -A- S.-Ad
Milt
too 4-f roe
--so
69 PWWMAISM 610 d mmomw

00
#dh ho now" 1 "M SMLNWtw, A, 1. -00

-

so C,
;
AM
A44W. Mduk. SUR. Ser.
-kw 00
i

00
M. I .
I
S (INS) IN AwAPL-Tlw
wmv~ derivatitm of AM peft"Od" dOP4 of a m
-09
00 S!i cunwmt m"mlk qwcwmwkd* PUN
so 011*0W in lhe "44"O"A"ft OW is awwww

so U bY lfw e.ml kWumd in a swrownW" can wMj l1w
s
0 0 WOPAsPwW"lly -is 4sinmppromot Tjw
k
f v.'. d-d"ljm b A"d 1. b. 3.6.
j
lie 0.71S - I)-Ali CIM 80'" tnubwtion -
(3-715*AtX mg do pwarai" &p* knVis &dmd
by -mg-tbm of do m0wimoug do& The valLm
a**
Soo fOwd Am *P*Cis* hbhw Ow thm of PVpvd
90W. 3%3 (1067)) ad of Wm~ md &Sombeq
Lkboa. 973 (I%S)L it in &AMmed dw das nay be a
d- dd~rc~ of awfiKc MxUdom D.S. COO

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no*

ties

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619431 d"
too
x
u 5 Air ta
0-I
14 8
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:
0 "1
e : : 0 o o olo
0 0 0 0 0 0 0 0 a 0 0 0 wo 0
0 0
0 0 4 0 0 6 0 0 0
0 i i il~

--SHARMIYU. V.
USSR/Fhysics Jan 1948
Superconductivity
Magnetic fields - Analysis
"Research on the Depth of Penetration of a Magnetic Field into a Solid Superconductor,"
A. I. Shallnikov, Yu. V. Sharvin, if pp
"Zhur Eksper i Teoret Fiz" Vol IVIII, No I
Describes experiment carried out to determine the variable EMF in a coil inside which
is placed a superconduction tin model in the form of an ellipsoid 4 cm long with a
diameter ol' I cm. Tabulates experimental results. Thanks P. L. Kapitsa, L. D. landau and
N. Vi Zav-,ritskiy for assistance.
PA 41T101

us V.
SAM (log. np. pimble
rww. fb. 21. SW 1951)--The
pmdmtim a for mmm-
em asor of tow
Aw of the mag"Ak
ding an was found
wilbin the &Lvuw Obe clit. it
, wbm
11 t aw tamp:
to 0. IS
N. Tbas
between s" 2.41k*3o-%)

SMVIN., YU. V.
USSR/Pbysies - Superconduicitors 32 Aug 51
"Intermediate State of Superconductors," Ye. M.
Lifshits) Yu. V. Sharvin'. Inst of Phys Problems
imeni Vavilov, Acad Sci USSR
"-Dok Ak Nauk SBSR" Vol MIX.. No, 5,, pp 783-786
Considers a model of a plane-parallel plate (in a
transverse magnetic field)-vith completely non-
branching layers. Poses the problem of.finding
,.the "characteri stic" value of the dimension L
,Vhose comparison vill dot the character of the
-*xisting structure of superconductors. Thanks
46aad K. L. for his - intwost, Submitted by
IAAd&U 13 JUA 1951-

now
AwdmL
-do now do~
this emd im-Ft L
at adkwg do smoomm vm do
"d
mit fw ~m m VA* am of
Ili-WON %do*-4j,7& hot 1w JET _iim
gM (" MM dok dM PWWA*-IW d0
v of okwmm 07 on"
P. man*"

MARVIN, Yu.V.; BdT-A OVA, B.M.
Structure of superconductors in the intermediate state. Zh. eksper. toor.
YIz. 23, llo.2, 222-8 '52. (KI&A 5:9)
(PA 56 no.668:5479 '53)

SHARVIN,Yu.V.; AMIANOV,V.P.; SHAROVA,Ye.A.
Z-1- - ~~* ~' I
Apparatus designed for determining small concentrations of 027gen
in gases. Zav.lab.21 no-7:853-855. '55. WaA 8:10)
1. Iustitut fisicheskikh problem ineni S.I.VPvIlava Akad.nauk SSSR
(Oxygen) (Gases--Analysis)

SHaVIN. YU.V.
Automatic regulator of gas evacuation rate. Zav.lab.21 no.10:
1261-126.2 155" (MIRA 9: 1)
I.Institut fizicheakikh problem imeni S.I.Vayllova Akademii
nauk SSSR. (Gas meters)

0
119~R/Ph~ftcs _'AnYS40A~opy 'of Sn FD-3279
Carr! 1/2 Pub. 146 - 38/44
Author : Sharvin, Yu. V.; Sedov, V. L.
Title : Crystalline anisotropy of the intermediate state of tin
Periodical : Zhur. eksp. i teor. fiz., 29, No 6(12), Dec 1955, 897
Abstract : The authors investigated the moments of forces acting due to a mag-
netic field upon a single-crystal tin sphere (99.998% pure Sn) in
the intermediate state, the sphere being held in a torsion suspension
so that the axis [0101 was vertical and being placed at a temperature
of 3.650K into a magnetic field whose dirpetion can be changed in the
horizontal plane; in addition, a sma" (1-2 oersteds) vertical field
varying its sign with a period of 30 seconds was imposed. Be suc-
ceeded in observing force moments having apparently a reverse equili-
brium character and occurring in consequence of the dependence of
surface tension on the boundary of the superconducting phase and
normal phase upon the orientation of this boundary relative to the
lattice. He provisionally concludes that the free energy of the Sn
specimen as a function of the angle between field and tetragonal axis
has maxima in the directions (1001 and (0011, the intermediate mini-
mum being at an angle of 25-350 to the tetragonal axis; the height of
the maxima for specinen 12.6 mm in diameter and 50% superconducting

__ _19.1-WO-MN
Card 2/2 FD-3279
Abstract : phase is jo-3 erg, in agreement with A. Pippard (Proc. Roy. Soc.,
203, 195, 1950). The author thanks A. I. Shal'aikov for his in-
terest.
Institution: Institute of Physical Problems, Academy of Sciences of the USSR
Submitted : July 18, 1955

I- _1V
USSR Physics of Low Temperatures. D-5
Abs Jour : Ref Zhur - Fizikaj No 4, 1957, No 9050
Author : Balashova, B.M.,IMWKI~Yu~-V-
Title : Structure of Interm6diate State of Superconductors.
Orig Pub : Zh. eksperim. i teor. fiziki) 1956) 31, No 1, 40-44
Abstract : An investigation is made of the structure of intermediate
state of tin specimens of various shapes and of a lead sphe-
re 40 mm in diameter. The shape of the regions of the nor-
=1 phase (n-regions) was determined by placing nickel pow-
der on the surface of the superconductor; this powder was
made up of particles with an average size of approximately
one micron. Two-dimensional patterns were obtained for the
structure of various types at various contents ;? of the nor-
mal phase in the specimen. A study was also made of the
influence of many other factors (the method of transition,
the temperature, the dimensions of the specimen) on the
Card 1/2

USSR / Physics of Low Temperatures. D-5
Abs Jour ; Ref Zhur - Fizika, No 4, 1957, No 9050
Abstract : character of the resultant pattern. For various transition
methods one observes the twisting of the n-regions at small
values of I and the "island" form of the regions of the su-
perconducting phase at 7 close to unity. On the basis of
experiments on the study of the distribution of the regions
in a very narrow (0-05 nm.) slit between two single-crystal
hemispheres, it is concluded that the winding distribution
of the regions, observed on the surface at small values of
71 is not retained inside the specimen. On a small portion
of the surface of the sphere, near its '~Nagnetic equator",
the n-regions are always of the form of comparatively broad
non-winding bands in the direction of the meridian, regard-
less of the method of transition. An analogous pattern
is observed near the equator on rings and cylinders, this
being apparently due to the small angle between the surface
of the specimen at these points and the magnetic field.
Card 2/2

pf'+~Vyvl ,,,
V,
LUTHOR: Sharvin, Yu. V. 56-6-5/47
TITLE: Measuring the Surface Tension on the Boundary Between
Supraconductive and Normal Phases (Izmereniye
poverkhnostnogo natyazheniya na granitse mezhdu
SbcbeY i normal I noy f azami) -
PERIODICAL: Zhurnal Eksperimentallnoy i Teoreticheskoy Fiziki, 1957,
Vol. 33, Nr 6, pp. 1341-1346 (USSR)
ABSTRACT; Measuring was carried out on a disk (diameter 50 mm, thick-
ness 2 mm) which was rotatably located - generated by a coil
in a magnetic field. Behind this disk there was a small tin
foil which was arranged so as to be parallel to the large
disk. At first the magnetic field was directioned along the
surface of the large disk, which could be read off from
the maximum of the conductivity of the tin disk. The coil
was then turned by the measuring angle Pw The earth's
gravitational field was compensated by means of a
Helmholtz coil.
The structure of the intermediate state was formed on the
fine nickel dust which was blown into a Dewar vessel, which
contained both the large and the tin disk. The surface of the
Card 112 large disk was irradiated by means of a luminescence lamp.

Measuring the Surface Tension on the Boundary Between 56-6-5/4T
Supraconductive and Normal Phases
By means of an optical window, which was connected with
a telescope, it was possible to photograph the structure.
As a result for monocrystalline tin the relation
2,5-10-5 (1 T 1/2 c,
T
was experimentally derived within the temperature range of
from 2.1650 to 3-50K,
where A - a . (8t/Hc2) is true.
and where measuring accuracy of is 6 - 8
There are 7 figures and 15 referencest 9 of which are
Slavic.
ASSOCIATION: Institute for Physical Problems AN USSR (Institut
fizicheskikh problem Akademii nauk SSSR).
SUBMITTED: August 2, 1957
AVAILABLE: Library of Congress
Card 2/2

SOV/120-59-1-43/50
AUTHOR: Sharvin, Yu. V.
TITLE: Anthracite Thermometers
(Ugollnyye termometry iz
C3
turnykh interval07)
for Various Temperature Ranges
antratsita dlya razlichnykh 1,-empera-
-
PERIODICAL: Pribory i tekhnika eksperimenta, 1959, Nr 1, p- 14?-1.48
(USSR) Z
ABSTRACT: The author has found -that by heating anthracite in the
absence of air it is easy to obtain a material whose resist-
ance depends strongly on temperature at low temperatures and
is apparently sufficiently stable. Pieces of anthracite were
placed in a quartz tube and were covered by coal dust. The
tube was then covered by asbestos and the whole ass.embly was
heated in an electrical furnace in which the temperature
steadily increased during five to six hours. The coal was
then kept for 15 to 20 minutes at the pre-set temperature,
after which the furnace was switched off. The specimens were
polished and those which were found to be mechanically suit-
able were selected. Copper films were then deposited onto
the surface of the specimens and very -thin copper wires were
attached to them. The copper layers were a few tens of
microns thick. The final form of the thermometers was a thin
Card 1/3

SOV/120-59-1-43/50
Anthracite Thermometers for Various Temperature Rang,,es
3
square plate 4 x 4 X.0 5 mra with electrodes on either side,
or pieces 5 x 2 x 0.5 mm 3 with electrodes at the ends. The
properties of these thermometers are given in the following
table:
Temp.of annealing POOC %OOK P
0C ohm.cm. 4.20K,)
VC OhM.0m.
Without
annealing 2
500 10 -
900 1 Z 0.1 10 1 20
1000 5 ~ 10 21;6 103
2 t 4 10 if
Card 2/3

SOV/120-59-1-43/50
Anthracite Thermometers for Various Temperature Ranges
These preliminary results show that anthracite may be a
useful material for thermometers. There is 1 figure, 1
table and there are 4 -j"ferences, 3 of which are English
and 1 is Dutch.
ASSOCIATION: Institut fizicheskikh problem AN SSSR (Institute for
Physical Problems,.Aeademy of SciencesUSSR)
SUBMITTED: January 31, 1958.
Card 3/3

SOV/120-59-1-50/5'D
AUTHOR: Sharvin, Yu. V.
TITLE: Hot Gas Current Stabilizer (Stabilizator potoka goryachego
gaza)
PERIODICAL: Pribory i tekhnika eksperimenta, 1959, Nr 1, p 154 (USSR'
ABSTRACT: The flame of a small gas burner can be stabilized with
respect to pressure changes in the gas mains by means of a
simple attachment shown in the sketch, p 154. The gELS
enters through the tube 1 which is blocked in the middle
and passes through a U-shaped German silver tube 3 ~
3 x 2 mm dia. The gas flow is limited by the resistance
of the flattened part of the latter tube. This part of the
tube is heated by a small gas flame at the end of the tube 4
which is also flattened a few centimeters from its end in
order to limit the size of the flame. The mutual disposit-
ion of the tubes should be such that when the gas pressu:re
in the malis isat a minimum the f lame should heat the tube to
a temperature or only 30-400C. The regulator can be adjusted
by rotation about the horizontal axis of the tube 1 ~ When
the pressure in the mains increases, the strength of-the flam
also increases and the temperature of the gas in tube 2 goe
up. This leads to an increase in the resistance of the
Card 1/2 narrow section of the tube since both the viscosity and the

SOV/120-59-1-50/50
Hot Gas Current Stabilizer
specific volume of the gas increase with temperature.. As
a result, the gas current passing through the regulator
-may be kept constant -to within 3-5%:when the gas pressure
in the mains changes by a factor of 2 provided the press-
ure change is sufficiently slow. If the pressure change is
sudden, steady state is achieved in less than 3 minutes. The
regulator should be screened from air currents in the room.
Such a regulator was tested in continuous work for several
days. There is 1 figure. This is a complete translation,
ASSOCIATION: Institut fizicheskikh problem AN SSSR (Institute for
Physical Problems, Academy of Sciences, USSR)
SUBMITTED: January 31, 1958.
Card 2/2

24(0) 301/30-59-2.42/60 U
AUTNUR, thalatnikol, 1. V.. Doctor Of Physical And Unthenott"I Sciences

TITIJ, In ... ticati-a Of Lao-te.p.-w. Physics po
flilko mi.kIkh twap.mt.r)
F&RIONULt Tostaik Ak&4..Li ... k 3558, 1959, Xr 2. pp 96-100 (0331t)
?V
&="ACT. The 5th All-94ion Conference on this problem took p1- in
Thillol. from October 27 to November 1, 1958. It was atteaded by
phyaloloto free Moscow. lh".k.,. L.nIc-d, Tbilisi.
Sv.rdlovsko Ad IM"Y. 4 fields of low-temperature physics were 7Z~
"managed, amp.rilquidity of ltq.id bell" 11, suproceft"ett'ity,
antliforma&gnotion, magneto-resi.tive offset. The following
reports And oamosonleations sort beardi A. A. AbrLkpjM_T, L i P*
arti.6 of
if the
ro
ti
on
p
p
0jor!jlor mpor led on the in ... liga
_
-
,
kov
"pracondootive alloys. A. A. Abrlkasov. I. P. Qor
~~
n&Iatnikov spoke of properties of supraconducter. In %be high-
-rrijo-anar magnetic field. D. V. ShIrka, and Chen-
-A1.0 *cl*nti.to _rkIAC at
'
!
for d*tomlm.%Ioa
22
Z
of the Influence sz.roi.*& by the Coulomb (Kulon) Intoracum
Card 1/4 at charges on supraconductivity. V. V._jqI%&chjv expl&U*d the
Sal collective exaltations arthe SM
,
type in supracoodua tars. S._IL_ZjLUxLv, Yu. A. T..rk..-Ik
spoke of the thermodynamics of supracanductore iil "..
is T,-A-LCAW of the thomal conduction of oupre,
V-y~Gmzz&loher reported ow, ex-
porimen tal worX with supracond.0tars. spoke
of the measurement of the Anisotropy Of thermal :..dactiv,ity in
th aspracanducttv* state. In a aerie. of report pralolems of
th: suporliquidity of helium were discussed, which "a 41*covor.
*4 In 1938 by P. I. Kept%*& and the theory of which vas, met *p
1 1941 by I. D. Landau. 2. L Ln~rO.ik.whvjj -4 his col-

labor re Investigated tU p;,.portles a ro ating hallum.
at,
V spoke of the offset of the formation of the
sOporll;utd an d non *U p*rliquid belimm. Guam
l
*
ey-yan-. collaborator ;f th 11slah okikb p"bl..
:
( ) .,..tiCmtd
th. P"P*rtiem of
Institute of Physical robt
Me so-called jusp In toap4ratare of Kapitea. --e-
ahanAXL1 investigated galvano*&Ootle
strong R:~otlc fields for m#tala with open Forml ov.rfacom.
3. To. Al.ksoyevokil, ju. P. Coydukov experimenu 1y lavesti-
snlset~~p_y-.Mpld c.o.rystals, 1. the
magnetic field. 1. S. ran. 3. a-L,42-Grov combine the 7"..nes of
-- - -
ueturar
0 %osper taro inlium itrtl;o itrueturs wtat# of the metal.
a th q.-l- theory Of a.Wllc on.-
e
r p*rl
l
lactromagn.tic and mag-
:
:
th: ag

qa;,u reported on th form
Asti 14, A_1A_12zOvIkt1L wwak
Seen:JI: In satif.rro.agrotla momplea of KnCO 3' _1! X~ ~1-0,
jq_,_A~Jnvwstigatad the &&Castle anisotropy of the sati-
forrom*o.tic sonoorystals COW 4and COSO 4' R. A-AjItio"o,
. tif ~ ties.
'
In I letions of
n
'd"
:t
:

i -
.
th.
.
r report d a
"Se
d b. t
&Z Ir
Pt
Mlity of nickel and nickel-c.pp.r alloys at low temperatures.
JL_J_Xo~~ff Touk*mlk reported on kinetic ph*w-*& In
forromagmetlem at I" to. rem. A%,.I~ Althlystor. _T__4
And 3 spoke of co.p tell f the
n
o
--rin forromagoti: die I
.:t
r
the *-&castle %.in l

jo spoke of observation re.
3"
d
at I tomper.tur*~._T !
a
zc:
3
;,
suit. of paramagnetic ~* I --- - M. M20 3 '6320
nitrate. A.-A.-MuM.111xv. . thoor-tic-I ""Yale Of the

orientation of the no ,pin In the Overhausor (Overkbaus.r)
W
street in nonmetal*. 8. 5. Sam!L101, S. W. Royn.v and 4012.bam-
tore mportodon cbt.iRrd#-1-rr.-.tat.d iu-cTeir.-T.-Y. sul.t.
t G, Lx.m%L.!h*.od that W,ag.n
-
.-
s
-
,e
~K
M
mtz~uc tures. 1. A. GinAin. a. 0.
iffereaf
al
d
.
. h
.;T
r
Lft Kh. D,SW.94"b v anl 1. 1. 1hatk_qY.Lch datected poly-
"
M -1. ,btr of amtale .1 low
.or, 1. L.
S'h
Andronikoah'ili, V. P. P.shka, and X. P. M.Ikoo report., O_. the
stage of develops -10 &QIWntLfIO research work in the
nt Of for
field r .. ratum physics. At the end or the Co.fq"nee
0 In t..i,:
L~UpAtcsr spoke of his successful devolopawat of investi.
.
P
-
_
Cations in the field of low-tosperature, Physics. Th. partial-
peato of' the Conrerqace visited the Inatitut fitiki jkA4*mjI
C&
Ift stituto of the Academy of Soleness
nook Grel Insk
i
y
1S%(Fhy
:
d
t
of the Ore I, k y.SR) he physics F.O.Ity of Tbilisi
:
.
Onl.om Ity A' -.11 a tho building of the no. rooaar~h ionic
P
reactor near Tbill. I.

2-'(3), 24(8) SOV/56-~6 -4-- ',2.//7C
r
AUTHORS: Zernov, V. B., 3harvin, Y-.;. V.
TITLE: 'leasurement of the lle-~istance of Tin of High Purity at Helium
Te,ii,peratures (Izmereniye so-protivleniya olova vysokoy chistoty
pri reliyevykh temperaturakh)
P_--Z11VDIC1~L: Zhurnal eksperinentallnoy i teoreticheskoy fiziki, 1950
Vol 76, Nr 4, PP 1038-1045 (USSR)

ABSTRACT: 1"leasurement of the residual resistance of metals at low temDera-
tures is a sensitive method of determining purity. The sensi-
tivity of the method is limited by the scattering of conduction
electrons on lattice inhomogeneities which are not connected
with impurity. This includes scattering on inter-crystalline
boundaries (in the case of polycrystalline samples), on dis-
locations and other inhomogeneities of the lattice and on the
outer boundaries of the crystal. If the metal investigated is
an isotope-mixture, a certain "isotopic" residual resistance
occurs. In the Dresent paper the authors describe experimental
investigations of a number of tin single-crystal samples of
different degrees of purity and determined the temperature
Card 1/4 dependence of resistance within the range of helium temperatures

SOV/56-36-4-12/70
Measurement of the Resistance of Tin of High Purity at Helium Temperaiures
as well as anisotropy. The authors employed a contact-less
method based upon measuring of the moment of forces acting
upon the conductive spherical samples in a rotating magnetic
fiel.d. The method was developed by A. R. Regell (Ref 1).
Figure 1 shows the experimental arrangement; measurements are
discussed and theoretically explained. For a sufficiently low
rotating frequency of the magnetic field it applies in first
approximation for the resistance that
Q = 10-9(4 R2 /15)(R5H2/TM)Ejj.cm] (R = radius of the sphere n
cm, H = field strength in Oe, T = rotation period in see,
M the moment acting upon the sample in dyn.cm), Wit-h 6 being
the skin layer into which the field penetrates, it iwist hold
that 6 ~>R (6 = f1O9qT/2n). For the purpose of experimen-s T
was chosen at 400 - 500 aec and R/6 4, 0-5. In the follow-4ing
the conditions for ellipsoid-shaped samples (semiaxes abre)
are discussed. For the moment of forces it then holds that
M = 10-9 47E2a5H2 20
15 T Q11 +eQ.L
Card 2/4 where k = b/a. The authors use samples, in which k = I i E

SOV/56-36-4-112/70
1170asurement of the Resistance of Tin of 11ifh Purity at Helium
In tine followinC, formulas Pre given for
)12 and for q for the case in ahich
2 2
1'! nax/O-'5 TH a . measuring results are given by table 1
and are discussed in detail. In the following the particular
features of some samples are discussed, the measured and cal-
culated -values for temperatures between 4.23 and 3.730K
are compared (Table 2), and the influence exercised by working
the samples upon resistance is investigated (Table 3). For the
anisotropy b, bjj/bL= 1.5 1.6 is found. The ratio Q,I/Q.Lfo-
-4.20K is about 1.3 - 1-5. For samples of the greatest purity
the residual resistance was determined as amounting to
-11
R-cm, which corresponds to an electron mean free
path of about 3 mm. Finally, the dependence of -the residual
resistance of tin on the impurity concentration C is investi-
gated. In the doublo-logarithmio scalo figuro 2 shown the
force of the dependence of Qo /200C on C (in percentage by
Card 3/4 weight). The values are on a straight line. In conclusion, the

SOV/56-36-4-12/70
Measurement of the Resistance of Tin of High Purity at Helium Temperatures
authors thank IT. IT. Y,-4khaylov, Head of the Techxodcgi.~,-al
Department of the IFP, for supplying the highest-puritY t--,'n;
they further thank I. Ya. Pomeranchuk for letting them know
the re3ultsi of a paper before Its publication, and they
finally also thank A. I. Shallnikov for discussions and va-luab.'--=
comments. There are 2 figures, 3 tables, and 17 references,
5 of which are Soviet.
ASSOCIATION: Insti~tut fizicheakikh problem Akademii nauk SSSR (Institute
for Physical Problems of the Academy of Sciences, USSR)
SUBMITTED: October 16, 1958
Card 4/4

2J10) WT/53-67-4-7/7
AUTROB. Chaste". 1.
TIMS Tb4 Fifth &%%-unioa Canf-reac* on the Physics of Los

I P 14.2aymi-n-0j-d- .0wheb.nly. po 'rrzMe niskikh
_0 11-10
ROM
M
PG
9
FmODICALS Uap.kbi fL219boskikh cook, 1259. Vol 67, Wr 4. vp 143rT50
(MR)
APS?RACT This Confereace took place from OOAQk-r 2LIOUYVIOS~_1 at
_
n_iyv filika-cat."il-
Ttalsig it -a rg" ise4 by the Qtdol~
--- a-e-skikh mauk Akd.mII ." SSSR (Department of Physic*-
"thomatleal Science. or the Academy Of Sciences, USSR).
In. &kAd-17. S..k Is's inakoy SSS (Academy of sciences.
UPS
lookays 2412). and the Thillaskiy gosudar.tvanny7 unt-
vat ItO 12. Stella& (Tbilisi State golver.itjr I.eal Stalin).
:
?be Coaferesto aa .%%ended by about 300 specialists from
Tbilisi, Rose-. khr-kov. Xty.,. Leningrad. Sverdlovsk. and
other cities as well an by a number of young Chinese scientists
at present working in %be USSR. About 50 lectures Yore 4.11"r-
ad which were divided according to research fields.
ZZ.
jy. 13 I*cturso were delivered an this
r1*14 of which too 1Wr. experimental and the others theoreti-
cal. topor%* me experimental Investigation. of ampracandue Iivity
Were delivered by jTL%*wL ~31&rvdm ani 7. P. Pantmakhor (IFP)
wW N. V. Uveritakly 1YFP7-M*form~r Investigated the
-
-
-
-
-
stroature of
t
e
h
Ta
t.readiate rtat* in moncerystals of pure
card 3111 tin, the letter ao&eured the thozzal conductivity of different-
1z shaped orientated cylindrical ealliun 842pl.. at
0
0.1- 4.2
K. &..A. Abrikomay, L. P. rorlkmv n1d 1. V. Khol.t-

11tow (TTP) thaoretrcally Imes. ic %a he beh.-f-T a -.
i a r' ---r
i;p*rconluctor In the hLCh-froqu*ncy field. V. L. Cineburg
and 9. ?. lh"k~ (YrAS) dealt with the micro-s-co-p =caheor7.
F
-
-
and GizzWur
3T
wcw***d mmonC o1ber things the pax~~ played
C
17 floctuatlons in Phase transition. of the second kind.

h
1. 0 Ito (WTO aho-ed that It follov3 from the modern
trMt"Mr
oupraconSwIlvity In consideration of 'the aniso-
tropy of metals tb4is In pr1nelplep the ixistonci of supra-
a Is poosibl* which sx* upra-conductive only with-
e
"al
n
e
,
.
l
i
ted rang* of temperature (and not at all tooperaturts
b I" the critical ones). 3 T. C Y"k. and V. E. gresta
'
n
lov.stivtod tb* I.c;ron- :H
h:n
on
ly of supraeanductors by ..ans of the micro*"pical tb=7 a t
Imporalarom that &to not very near absolute term. 1-1. V. ~uyk v
wA L. R. Curovich (FT1 AN SSSR) spoke about the surface
oner& iin-M*-T~darjr batsmen the supracon4uctive and normal
phas9s. V. Ir. tubar v and Tu. a Toorkovnikoy (!'atematichookly
-
-
E

Inatitu AYSSSV---
t
thwustli. Sit -.V
'TA
.45 t1=) dealt with
Card 4/11 %be thermadvasnics of the supraconductive 9 1at@ (Froohlich.model)p
TA: T
Tolmachov (1!1A3) Inventlastod the problem of collective
;
*Xal times in a upraconducter. D.- T.-Shirkov (Wyolinwanyy
-
-
t-Mr
in.IAlut
der
th i
T
2sl
i
i
i
-
ss
az
yo
o
Jo
n
cy
at I
nto of Nucle&r
.
Itonwarch) spoke about constde~a-icn of Coulacb-interaction
of electrons in .*aLconduotorp. 7h, probl*= of conilderation
of the Coulomb interaction was discussed by Chen' Chlu-hslem i'~

0011
,

SHARVIN, Yu.V.
Measuring surface tension on the boundary between the superconduct-
ing and the normal phase of indium. Zhur. eksp. i teor, fiz. 38
no.1:298-300 Jan 160. (MIRA 14:9)
1. Institut fizicheskikh problem AN SSSR.
(Surface tension) (Indium)

83582
B/056/60/038/005/015/050
'XA, 7400 v#3 B006/BO70
AUTHORSi Sharvin, Yu. V., Gantmakher, V. F.
TITLE: Anisotropy of Surface Tension at the Interface Between the
X Superconductin and the Normal Phases of Tin
IN
PERIODICALs Zhurnal eksperimentallnoy i teoreticheskoy fizikij 1960,
Vol. 38, No- 5, PP. 1456-1470
TEXT: The present paper is a detailed report on the determination of the
anisotropy 4 of surface tension at the interface between the super-
conducting (s) and the normal (n) phases of tin, using two methods that
give directly independent values for A-6 has the dimension of a length,
and is related to the free surface energy 6'ns by the relation
d, AH2/8r. The difficulties in the experimental determination of,6
ns c
are discussed in the introduction. Then, the first method is described.
It is based on an analysis of the structure of the intermediate state on
samples with different crystalline orientations, the analysis being made
with the help of ferromagnetic powder. The apparatus used is schematically
Card 1/3

83582
Anisotropy of Surface Tension at the Interface S/056/60/038/005/015/050
Between the Superconducting and the Wormal B006/BO70
Phases of Tin
shown in Fig. 1. The results of the method, called "the method of frozen
flux" and described in detail, are separately discussed for the individual
Samples- Figs- 4-7 reproduce photographs of the structures of the inter-
mediate stage in a field of view 1.4 cm in diameter; the white regions
are superconducting, the arrows show the projection of the crystallo-
graphic axks onto the surface of the sample. The numbers of the samples
and the temperatures are also given. Figs. 8-10 and 13-15 give the cor-
responding polar diagrams. The second method is based on the measurement
of the moments of force acting on spherical samples in a magnetic field.
This method is called the "method of torsion balance", and is also
described in detail. Due to the anisotropy, the free energy of the sample
depends on the orientation of the magnetic field relative to the crystal-
lographic axes of the sample. The sample is suspended by an elastic thread
in such a way that in the state of equilibrium the moment M . 4F* may
be determined from the angle of rotation a in a horizontal magnetic field;
A is calculated from M. Densities, impurity concentrations, and the
moment YA of nine samples are given in Table 1. Figs. 18-21 show the angular
dependence of the moments m (m - Mi/H2V, V - sample volume) for different
c
Card 2/3

83582
Anisotropy of Surface Tension at the Interface S/056/60/036/005/015/050
Between the Superconducting and the Normal B006/B070
Phases of Tin
.axes of suspension (axes of rotation). The f-values measured in the
various positions (f is the free energy divided by VH2/87), Iml and
c max
JE~-M are given in Table 2. The results relating to the dependence of
surface tension on the direction of the normal to the interface, the
order-of absolute magnitude of this effect, and its temperature dependence
are discussed in detail. Finally, the results of the two methods are
compared with each other as well as with the results of the theory.
P. A. Bezugl-vy, K. N. Bogolyubov, V. L. G-taRhIrff, and L. D. Landau are
mentione-d--iii-this conneoffon. The iii1io'rs thank Academician P.L.Kapitsa
for his interest, and A.-I. Shallnikov for discussions. There are 21
figures, 2 tables, and 21 references; 755 Soviet, 3 Us, and 3 British.
ASSOCIATION: Institut fizicheskikh problem Akademii nauk SSSR Institute
of Physical Problems of the Academy of Sciences U~SR)
SUBMITTED: December 31, 1959
Card 3/3

GAMMAKHER, V.F - SMVIN YU V
Nonmonotonous dependency of the surface impedance of tin on the
magnetic field at a frequency of 1.9 me. Zhuro ekspo i teor,
fiz. 39 no.2:512-513 Ag 160o (MIRA 13:9)
1. Institut fizicheskikh problem Akademii nauk SSSR.
(Tin) (Metals at low temperatures-Zlectric 'properties)

66896
S/056'/60/039/005/072/0q'~
B029/BO77
AUTHORS: Sharvinj-.T,4.,_,V., Gantmakher, V. F~
TITLEi The Depth of Penetration of a Magnetic Field Into a
Superconductor as a Function of the Magnetic Field Strength
PERIODICAL& Zhurnal eksperimentallnoy*i teoreticheskoy fiziki, 1960,
Vol. 39, No. 501), Pp. 1242-1250
TEXT: So far, the intensity and characteristic of nonlinear effects in
real superconductors has not been clarified by experiment and theory.
The theory of V. L. Ginzburg and L. D. Landau furnishes the following
expressions for a temperature range close to T a
+ 2 F2 f2 / eeff / H 3 2 0). A6'68Afng to
8(X+ V2) 2 c c
L. P. Gortkov (Ref. 2), e has to be twic6 the charge of electrons in
eff
order to agree with modern superconductor theories, and the range of
application of the above relations has to be limited, took Evidentlyj
Card 1/4

86896
The Depth of Penetration of a Magnetic Field Into 5/056/60/039/005/012/05-,
a Superconductor as a Function of the Magnetic B029/BO77
Field Strength
no investigations have been made so far for ranges where the theories of
Ginzburg and Landau do not apply., To clarify several discrepancies,.the
authors studied many specimens, employinE~,.Qe more accurate radar-
frequency method. A. A. Abrikosov, L. P~~ov, and I. M. Khalatnikov
(Ref. 12) developed a method for a theoretical estimation at limited
frequencies. On the basis of the experimental data, the authors selected
an operating frequency of 2 megacycles. The following part of this paper
deals with the measuring methods, the measuring instruments and their
calibration, the necessary control tests, and the evaluation of the
results. Superconductivity vanishes at the sharp bend of the curve
Afj(H); af, denotes the frequency shift of the signal of the first
generator. Sometimes this superconductivity vanishes at a field strength
greater than Hd, In another specimen the dependence of the effective
increment 6 eff ~ - (dr/dfl)bfl of h - Ho/Hcwas' nearly parabolic. The
rapid increase of ot at T-4TC seems to be caused by secondary effects,
The following expression was found for the transverse field:
Card 2/4

86896
The Depth of Penetration of a Magnetic Field Into S/056/60/039/005/012/051
a Superconductor as a Function of the.Magnetic B0291BO77
Field Strength
,(1 2 4
V h.L + a ph );. h, denotes the ratio of the strength of tlLe
external field to that where the specimen is no longer superconducting.,
Other specimens showed considerable deviations of the curves A (h2) from
2 eff .1
linearity at small values of hi 1 let the function T',4 (z)
have the properties
V (0) 4 V ZI) < (Z"? < %L 1 O