Solubility and diffusion of chemical elements in high-temperature superconductors
Solubility and diffusion of admixtures of cationic (Ni, In, Sn, Au, Cd, Bi, Ag, Y, Hg) and anionic (S, Se) subsystems in structural-inhomogeneous HTSC-polycrystalline YBa2Cu307-δ and (PbxBi1-x)2Ca2Sr2Cu3Oy were studied. Methods of radioactive indicators, X-ray spectral microanalysis, scanning electr...
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| Datum: | 2001 |
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Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2001
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| author | Alfeev, V. N. Bakuntseva, M. V. Gorbik, P. P. Zaitov, F. A. Shalyapina, G. M. |
| author_facet | Alfeev, V. N. Bakuntseva, M. V. Gorbik, P. P. Zaitov, F. A. Shalyapina, G. M. |
| author_institution_txt_mv | [
{
"author": "V. N. Alfeev",
"institution": "Institute for Nanotechnology and Cryoelectronics"
},
{
"author": "M. V. Bakuntseva",
"institution": "Інститут хімії поверхні НАН України"
},
{
"author": "P. P. Gorbik",
"institution": "Інститут хімії поверхні НАН України"
},
{
"author": "F. A. Zaitov",
"institution": "Scientific and Production Corporation \"Orion\""
},
{
"author": "G. M. Shalyapina",
"institution": "Scientific and Production Corporation \"Orion\""
}
] |
| author_sort | Alfeev, V. N. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2018-11-27T09:42:39Z |
| description | Solubility and diffusion of admixtures of cationic (Ni, In, Sn, Au, Cd, Bi, Ag, Y, Hg) and anionic (S, Se) subsystems in structural-inhomogeneous HTSC-polycrystalline YBa2Cu307-δ and (PbxBi1-x)2Ca2Sr2Cu3Oy were studied. Methods of radioactive indicators, X-ray spectral microanalysis, scanning electron microscopy, and electron Auger spectroscopy were used. |
| first_indexed | 2025-09-24T17:44:40Z |
| format | Article |
| fulltext |
SOLUBILITYANDDIFFUSIONoFсIIЕМIСALЕLЕМЕNTS
IN IIIGII-TЕМPЕRATURЕ.SLrРЕRс oNDUсToRs
V.N. Alfееv,, М.V. Bаkuntsеvа', P.P. Goтbikl,
F.A. Zaitоv3, and G.}1. Shаlуаpina,
I Instilute of Suфcе Сhеmistry, Nаtionаl Аcаdеtnу of Sсiencеs'
l 7 G еtt. н ou^o"}.,,,- ку i v" о з t 6 l, u клi t м e ; e-mаi I., u sеr @мфhem.Jr е еnе t' ki еv. u а
,lnstititе
7or N',;;,;:;;;;;
:;у,,*,;'#:;:,:"'ff,i;x!:?;{';:сhnologicаl
Sciencеs,
5 s,i,,t'7Ь аnd Production Сorporаtion ',9:::!'
46i2 Еniuziаstov Roаd, Moscow I1I ]23' RUSSIА
oo'..ъ:'i'o,lity
and diffrrsion of admiх1urеs of сationiс (Ni, In' Sn, Au, Cd, Bi, Ag, Y' Hg) and
anioniс (S, Sе) subsystеms in struсtural-inho.ogеnеous iтsс.potусrystalline YBazCuзoz+ and
(Pb*Bir.*)zCauSгzCuзo,
.*е,е
,tuаlеа мetьoаТ Ъi гadioaсtivе. indicatoгs, Х.raу spесtгal
miсгoanalуsis, sсannlng .i;;;;o" ;i;"sсopy, and еlесtron Augег spесtrosсopy wегe usеd.
Wеhavеinvestigatedsolubilitуanddiffusionofadmixturеsofсationiсandanioniс
subsystеms in pory".y,t"Тtin. нтsс' й*,сu.o,luм рь-вi'.-)zC^azSгzCuзo, bу thе mеthod of
radioaсtivе isotopеs Il-22] Two tуpеs of drffu,,on f.o..''.s wеie found: thе slow and fast onе. It
was shown thаt a fast Ъ'pon.ni of difГusion сЬ.m.i.". was duе to mlgration pгoсesses оf
diffusing еlеmеnts *.",;.;i;;;;й;;i;.гu.. аirг"'io") and thе slow onе was duе to a spatial
difhrsion' lt was found uiьung. of difnrsiчтnЪс11"i,ч
'Ьl |l-}.::j:
Ag i1
'h: Ч:111fi.'
mateгial in thе tеmpей;;;;;. of 573.673K' Thе abovе rnеntionеd effесt was assl8nео to
яeneration of oхуgеn uu""n.i.. ii Cu-o-ptanе* oitь. сrystal lattiсе of a supегсonduсtoг. Thе natuге
Ьf tеmperatuг. а"p.nа.iii",
"г
iь. slow and f*;,;й;;;nis .of
diffusion сoefТiсient allowed to
сonсludе that violation oi sioicьio,nеtry by o-yЬЪ"-ьuЪ an influenсе on both the spatial and thе
surfaсеdiffusiool,.u,,
еxperimеntal results by an ехamplеэ,.':o]:^,."^1.:}.o^Iж::::rЖ.Ъ:'
Ni,In,Sn,Bi,S'Sеtl-3,5-s,11]anduа*i*tu..,-inнтSссегamicsofYBazCuзoт.ьand(Pb*Bir.
',..'';i|ЁЪ1l.,u.i., samplеs werе pтoduсеd by a mеthoа oг sorid-{3у"::]j*i;lJ:."::H"
tесhnologу of Yвu,сu.6,o l","п1l., *u, dе.c,iй in thе works [1.3]. This сеramiсs was a singlе-
phasеsystеmhavrngorthorhombiсstгuсturе,-*..ug.сrystallitesizеwas5.2Oрm.Granulaт
сhеmiсal сomposltlon сorrеspondеd to thе.phasе t-z--з тйе spесimеns ехposеd a transition to a
supеrсonduсting statе altTc='9?K,-a.transition width was Tс = 1 5 K.
i.j;}ffi;;lТ;;:i?й:"::',,Сa2Sr2Сuзo, was dеsсribed in thе woгks Il,4]. Thе
mеntionеd сегamiоs *as a iinglе-phasе homogi;;;.];.JTl.1]:':l :'..o*.nt'
of 222З phasе not
more than 95 %. тrans]iiй1oiь.,,upегсonduс-ting statе was in thе гangе of 1l6-1l0K, сeгamtсs
].""', *"' 4,6 !cm3 ' Average.gran"l"1.]i:^:'.' 20-30 рm.
It should bе notеd that in thе int.,g,uin ЬJunаu,y u,"u signifiсant vaгiations in a сhemiсal
сomposition *.,. noi-iouJ
.u".o,аing
Тo tь. data obtainеd Ъу mеans of sсanning еlесtron
miсrosсopе еqulppеo *iii i.i"у speсtгaT miсroanalуser ICХA-7 33 type IЕoL (Japan).
indi
Ni0
solu
Diff
hour
Bi u
mеtl
Dim
цm1
WAS i
and r
Fio I
Fig
э\'star
end ]О
cхvgеl
:ltТusiс
::есhаr
248
f \ТS
l, ,-1.
!. .':сes'
Тhе 6зNi, l,oln ,l,sn,
and 207Bi isotopеs wеге usеd when studying diffusion of niсke'.l:*чT 'an{
t1n bу a method of r;dio;;i;;in5.u'o., A salt of ,h. ."-::1*"*Р'::"?1":'..:"]'Ni(Noзh, Snoloз)z ' InClз
'
Bi(No.l; ;;; .й.а on u *Ь.. ;;;,";::i:':Ё#*l'i:jH:solution,.A tЦiоknеss of thе salt сoating *u, l66 ц*
]|.',9. ''o'oP"1::l..used
foistudy;ng u alffu,ion of sulphuг and sеlеnium.Diffusion profilеs^wеге foгmеd in thЁ tйeгatuге rangе of 200-500 .C with a stеp of 25 "C'Diffi...sion of sulphuг into сегamiс samplеs was'сaпiеd out-fгom thе vapoг phase duгing 20-80l?Тl;jgуi3l;,;'?ilifli;;;;;;;;йi u ,o 57 h";;;' Бiff.,,ion p.oлr". of Ni, Sn] In and
.*n"orJlP#TJ':;J*"::::T'il:iЁo'*.'on front aсIoss a samplе aгea was сontгolled by a
It was suggested that u J;i'ion fгom a сonstant souгсе took plaсe in a givеn casе'Diffusion pгofiles wегe dеtегmin.с ьу a_'.tмj or,u...,,iu.Ъ..r'"c
"i.ayегs
with a step of 3-5цm to a dеpth of 150 pm and Ьy *.u.u,.'.nt of a residual ;;;;;'?й' A diffusion сoeffiсientwas dеtermine d bу a linearization mеthod oi.Ь]tun..,on.
""o '.i;i1l..::.TJ'*,ч3сo1сentгation
n.u. u surfaсе was dеtегmined by a гefеrenсе mеthod
Fiрге l shows diffusion сoеffiсiеnts of N],. In, Sn ve]'sиs.tеmрегatuгe. D.valuеs given inFig. 1 сoпеspond to thе aveгagе valuе of fouг
'.u,u,.,n.n,,. Statistiсal t..ui'.n. was сaгriеd out
1.. ,
le. -
/
l
-.; and
- --. and
. : эсtral
шi ::1lonlс
I -.::Od Of
! :r.: onе. It
д..ssеs of
!' l sрatial
Е::,]uзor.ь
щ: -:rеd to
] - -: laturе
f i :..r'еd to
rc: зnd thе
! : ''--sion of
1 r-- - PblBir-
r :--Juсtion
r:.: singlе-
Е ]гanular
ш. .:on to a
Н
h0
I
I
'| пlLJ
t1
ls
i
Е.
I
. .i] Thе
: ],ase noт
: егamlсs
. :hеmiсal
: еlесtron
1,4 1.6 1 B 2.A 2.2
10ЗЛг, I{ - 1
Fig. 1. Diffusion с'oеffiсiеnts vs. tеmpегatuге: l _ Ni, 2 - In, 3 _ Sn.
by standaгd mеthods. Епoгs in еstimating a diffusion сoеff.iсiеnt and aсtivatiоn еnergу (Е") wегe 30and l0 pеrсеnt, гespесtivеly. For niсkеl it thе tеmреraturе of4O0 "C (i.е', in thе гangе ofa staгt ofoхygеn depletion) a fraсturе is obsегvеd that indiсatеs diffеrеnt jiггusion mесhanisms in thеtemperaturе intervals of 200-4OO and 40O-5O0 "C:
for the rangе of20O-40O "С
for thе range o,ooo-,ioТJ
' 1б ' ] 0.'u ехp (- /o l7lkт) сm2ls,
Sinсe in ...".i. -.u*?;'' ;1 lT:iJ *,,Jfl#3i u'ono.osta' along with a volumеdiffi.rsion, it appеars' possiblу, to bе an o..u,,.*. of gгain-boundary and surГaсe diffusionmесhanisms, thе resulting eхpегimеntal parametеrs (D"and йl ь.'. ."l"i,еgгal сhaгactеr'
249
It is notеwoгthy thе faсt that thе tеmpегaturе range of varying Ni diffusion paгamеtеrs
сoinсidеs with a tеmpеruй *ng. of generating anion vaсanсiеs' This suggеsts that stoiсhiometry
deviation by oхуgеn ,.',r''-in йraсin,g 1 diffu-sion mесhanism. It should bе notеd in сonnесtion
with this, that an activation .n..gу in thЪ low temperaturе intеrval (в"= 6.17 еV) is a оhaгaсtеristiс
onе foг an intегnodе '".ьuni.й,
but in thе high tеmpеratuге. гangе (Е":1.3 eV) - foг a vaсanсу
mесhanism [3]. It should also be notеd that g"= 1з еV is сlosе to an oxуgen aсtivation еnегgу
(1.2a е$ in crystals of CaWo+,
In the tеmpеru.u'. jйnа.nсe of indium^ and tin diffusion сoеffrсients in thе tеmperature
,.ung. ьliй ,;dй' f..;;;.;;; to a сhangе of a diffusiоn mесhanism arе not obsегvеd. At the
samе timе' attentlon ''-;;;;;
to a sharpЪiffеrеnсе of tеmpеraturе dеpendеnсiеs of diffusion
.Ь.й.i.nti foг suсh similaг mеtals in atomiс гadiil
-"-...-
io, indium (in thе rangе of2OO-500 "С)
D= 1 1 l0o ехp(-/026/kT)'
for tin (in the гange of200-500 "С)
D = 8 0' 10.6 eхp (-/o 5s/kТ)
A laсk of brеaкs on tn and Sn diffusion сoеffrсiЬnts tеmpеraturе dеpеndenсies pav.iч|iс.atе
thatastoiсhiomеtrydеviationbуoxуgеn(plаnaгCu-o)doеsnotinfluеnсеthетеspесtivediffusion
flows. lf thе sharp сiгг.i.n.. in
"аiггuslon сoеffrсiеnt tеmpеraturе dеpendеnсiеs observеd
еxpеrimeпtally is duе to a diffегеnсе in an еlесtгonic structure of outег еlесtгon shеlls of a
diffеrеnое in сhargе,t.i., oгdiffusing mеtals, so it is interеsting to gain insight into a mесhanism
ofthis phеnomеnon. It ,i""rа ь" notй that a djffеrеnсе in difi;iion iсtivation enеrgу variations is
sуmbatе to a variation ;iй;i.;i.;potential of atoms (ln - 5 7864 еV, Sn -.7 З44 eiD.
Inthеstudiedtеmpеratuгеinteгvalthesulphuгсonсеntгationnеarthеsuгfacеarеaof
YBazCuзor-ь (whiсh *u, i.t.,'inеd bу standard mеthods coпеspondinя to maximum solubility)
had a littlе dеpendеnсе on thе tеmperatuгe and ;.;;';;;;.,-
'iio"^-z"
u' 200 oс to 4 ' l020 сm.з
з:tH: сonсentration in nеaг suгfaсе arеa of YBa2Сu3or.ь did not dеpеnd on trmpетaturе and
was -1020...,, In",.u,..in-,.t.niu* solubility dеjending on thе tеmpeгature was obsегvеd in
(Pb"Bir.")zСazsисu,o'. l-i.ii
"i
i. solubilitу. Jas.iъ;; ;;З u. zоо "с und it *u' -1020 сm.J in thе
rangе of 3O0-50O
.C з"йllй oi ьi,.utь,in thе studiеd HТSС matеrials was not possiblе to
аЪi3..i""i" the limits of thе mеasuring mеthod.
l diffrrsion proсеsses (slow
Тhе presеnсе oiй.yp.' of*diffusion flows and оoпеspоnding
and fast) wеrе oййi".j, ьу anaiуsis оf diffusion profilеs in YBazCuзoт.о and
(Pb*Bir.*)zCazSг2Сu3o, сeтamiсs, l...^.f ^.^^ ^.т.\"i.т\ t.сlnw] аnrl Dс(2) (fast) соmponеnts
Fig. 2(a) shoйs the tеmpегaturе dеpendеnсе of Ds(I) (slow) and Dq(2) (fast) соmponеn
of sulphur diffusion "o.iг,"i.nt
in rъu,сu,oт.ь сегamiсs Thеsе data show eхponеntial
dеpеndenсiеs u.о u йiui. polnt il 30? ;ё- ;;", rvhich indiсatеs thе diffегent diffusion
meсhanisms. lt should й notеj that this point сoinсidеs with oхygеn vaсanсy geneгation staгt in
Сu-o planеs tьut is p.oiuьi;;й; ;'"" oГЪiansе of diffusion mесhanism.
It should b.-;;t.а that similaг а.pйjenсiеs of diffusion оoеffrоiеnts on tеmpеraturе
сhangеs wеrе obsегvес^in inu.'tigutionоf niсiеl and gold [a] in l-2-3 сеramlсs'
Fig. 3(a) *h";;D; *аЪq sulphuг
'.';;;.;;d.p.nd.n"i".
for (Pb"Bir.")2Сa2Sr2Cuзoу
сeгamiсs,
Ds = 6'9 10"9ехр(-0'31/kT) сm2/sес
Dq = 1 6 10.8eхp (-0.15/kT) сm./sес
When сomparing thе data on ,utpьu, .
аiг|us]9n in YBa2сu3o7-6 and
(Pb*Bir.*)zCazsгzCuзo,, it is possiblе ,ч
":1|,;*
.мi ,ь. thrеshold еffесts in bismuth сеramiсs
сonnесted with stoiсhiomеtry dеviation ]" '";;;; ;..e not apPеared This prinсipal diffеrеnсе of
tеmDеraturе а.p.no.n.]., oi,utpьu. аifгusion'ioefГ'.i.nt is рrЬablу соnnесtеd with this faсt.
Fi
a
Fio
з_S
- сгaп
:,.r sl,
-!l td
2s0
nеtеrs
Imеtry
есtion
егistiс
lсanсy
эnеrgу
эrature
At thе
h-rsion
ndlсatе
ifr-rsion
эsеrved
lsofa
hanism
,tions is
aгеa of
ubility)
.-- сm-
uге and
:п'еd in
.]
rn thе
isiblе to
еs (slow
---i and
..эonеnts
] 'rnеntial
:l:Тusion
:- staгt in
:эеraturе
S:;Сu3o'
!--5 and
:егamlсs
lе:еnсе of
..: ^}
(а)
- lg Ц (Ds)
I
ф)
- 1g Ц (Ds)
(с)
lh-rglJ
a
10
It
9
LO
I
.l
r.0 1 5 2.0 1.0 1,5 2.0 1 0 1.5 2.0
i0ЗЛI,К -l 10з,T,К -1 1ОЗЛг']<.l
Fig.^2. Теmpегatuге dеpеndеnсiеs of S, Sе, Bi diffusion сoеffiсiеnts in Y!}azCuз07.6 сегamiсsa- S, 1 -D., 2 *Do; b _ Sе, 1 -D,, 2 -D". с-Bi,
\о,/
- lg Ц (Dc)
(b)
-ls D
(с)
lgD
Ч
lгlIU
7
aо
9
o
10
11
10 t5 2B l0 l5 2010 15 20
10зЛI,к.l ]Оз/т,К.l 10З/Т, I{.l
Fig. 3. Tеmpеraturе dеpеndеnсiеs of S, Sе, Bi diffusion сoеffiсiеnts in (Pb*Bi1-*)2CazSrzСuзo'
сегamiсs
a- S, l _D",2_Do; b - Sе; с-Bi
Fig 2(b) shows two сomponеnts of sеIеnium diffusion сoeГfiсiеnt in YBauCutoт.ь
сеranriсs,
foг slow сomponеnt' Ds = 2,8 l0.8ехp(-0 2slkТ) сm'lsео.
foг fast сomponent: Dq = 3 '0 l 06 ехp (-o 26ikT)сm2 /sес.m
Теmpeгatuге dеpеndеnсiеs of sеlеnium diffi.rsion сoеf'iсiеnt in (PЬ*Bi1.*)2CazSгzCuзo,
сеramiсs arе: D : 6'9 \o-1 ехp(-0 24,&Т) сm,/sес'
251
1.5 2R 1.0
Еis 3(b) shows that theте arе no еffeсts сonnесtеd with
( Pb-Bi'.:)'а;;S',ё". o, Thегeforе' thе pгinсip al tеmpеratuге
mеntionеd mateIlals
Tablе 1
Diffцsion paramеtrrs tn сompound YBazCuзoт.ь
thе pгesеnсе of diffеrent flows tn
с.oЬnа.n." was obsетvеd in thе on
pес
difl
aftс
vah
Еlе.
mеnt
Iso-
topе
ComPound Соm-
рonеnt
Do
(сm?/sес)
Tеmpеraturе
rangе (K)
Rеfeге.
nсes
Еa
(ev)
Ni(Noз)u
Aftrr US tгеatmеnt
llauln Inсlt
l1зsn SnQ.'ioз)z
tn5Au AuNo,
2078. BiQ{oз)з
''oAg AgNoз
l25мС СdQ\{oз)z
А
.5S vaрoг
1.1*i0-8
8 C* 10-o
slow 2 8* 10-r
I
slow 6 6
last I 9x 10 I
fast 1 9* 10-.
i 0* 10'"
clоw з 16+lO.9
;i;" 2 si*to.'8
fяqt 4 4*l0."
i;;i z e* ro lr
slow 2 8*10':
fast 4 5*10':
slow 1 6* 10
:, . n+ln-"sloц' Lv |v-
fast 5 0* 10.:
Гast 4.6+ 10"
0.26 4'10 -'l'70
0.58 4,7О - 1i0
o o'72 5'70 - 610
1.62 610 -'l'70
O i3 51О . 6.70
1.08 610 - 110
o 41 4.7О -.|'70
0.12 4',70 '610
o 23 61A -'710
0 3 1'70 -6'70
2'б 6,70 -.710
o зz 410 -,7,70
О'26 4'|0 -.l,70
c 26 4'70 - 5"70
o 17 s1A - '1'70
o 32 "17CI
0.42 570
510 -'1'70
О,28 41a - 1.70
o.26 410 -'7'70
Гasi
slor.v
3 16*10'
1 0* l0-2
2.',l* lo'e
4 0* 10'e
41О - 51o
510 - 1'70
410 -110
410 - 110
[1-3]
[1-з]
[1-3]
[ 1.з]
[1-3]
[1-3]
i4l
t4l
t4l
t4l
[1il
rli l
ILL J
raa I
ILL J
IZL J
г1]lILL J
llll
ll 4l
[11]
[11]
u1l
ll ll
ll ll
[111
017
l.J
0.16
0.3з
ln
Sn
Au
Bi
Aq
an
t{
15 vapor
S
58 YCls
Y
2 8* 10'8
з 0* 10.o
125*10'8
1 .9'r 1or1
4'70 -610
6.7О -.710
s1oъ
fast
slow
fast.
n t) L22l
г.). l
ILL I
It also should be notеd that in. YBa2с:]9:j.::',T'::*:.:.}Т::.d oxуgеn
""i"f
1".,j#'"".'':ЁJ.#9ffi ;ll"^ф:::.::;:::..T?j:1'.;..'lJj:":ff 3;n* Ьn
'.t.nium
diffusion in thе сoпеsp6nоtt,в ,"..у"ijn.""
Бt.ь" diffusion сoеfflсiеnt
Lеt us сonsidеr thе rеasons of aгnе,a111с1jl
'.To.u^',n hе noted tьut ь",'а., th" uolu..
--'.*;l;i'Тъ:fli:"'".Щ:ii,::'.,.'1'i*i"'ж'j.i,i::lт.'ll,.т'х;":li':ж;lссo,ding io Р:^.1":::.жHfi'?:l1?.::iJ}fu:'ж ;i.:;i:i,.::]::';."'u.'. matеrials, whiсh
diffusion,thеintеrgrarn. ,.,^.^:" IJрfl.Р,тisоossiblеtosupposetnattheР',.ч.Р:i:::^",]il;j.1"o;:,й; int.'-g'uin boundary (surt.aсе) .-,ч'l",';;:ЬЁ';;;;;
that the fast сomponеnl^of
;;;;';;; й". tьй T:"":Y.т:.'."::,''"s".j:..;i,,; ъ;;;; *i.tь *ig.ution lhrouch
15c.1::l;;;;;;i; lower thй monoсrystal onе ls, Llеnсе' '. i;
,;;;;;; ;;; migration through intergratn
diffusion сoеffrсiеnt цor suiphuг,ano^'::]::::]."еnt of diffusion .o.гг,lйt is сoinесtеd with;tfili"; сЬеm.iеnt (for sulphuг.and.,.l.1'::"}ffii;i;''ion .o.fu'.i.nt is сonnесtеd with
ьoйu"у and porous surГaсеs. Thе slow сompo
liffusion
Тhis suggеststhat in сasе "г:,]чh:,^d]P:::;ji:"il:]l'j:rffifll?["'l.:Ё*#'.
vaсanсiеs had
volumе diffusion
Тhis suggеsts that in сasе ot sulрпut "'.,.;;;..';ь.. unа suгfaсе diffusion (Fig. 2a)
сu-o prun. oiyЁu,сu.o,.ь has еssеntial influеnс.
252
:::еnt flows in
i.еlvеd in thе
: Rеfеrе-
nсеs
Whеn сompaгing thе data obtainеd in the рrеsent work on sulphur diffusion with thе data
on niсkеl diffusion in and gold diffusion [4] in \Ъa2Cu3o7.5 сeгamiсs, it should bе noted thе nехt
pесuliaritiеs:
1) a сhangе in S diffusion mесhanism oссuгs at 300 oС' whеn
diffusion this point is at 400 "C.
2) Aсtivation еnrrgy of fast and slow proсеssеs in thе tеmpегatuгe intervals Ьefoге aлd
afteг a сhangе of a diГfusion mесhanism of S is diflerеnt slightlу (0.1 еV), but at thе samе timе this
valuе is l,1 e\/ fоr Ni, -0 85 еV for Au and aссordinglу -1 5 еV foг fast and slorv pгoсеssеs,
Тablе 2
Paгametеrs of dif!.rsion in с nd (Bi b')zСazSrzСuзo
сasе of Ni and Au
Tempегatuгr Refere-
rangе (K) nсеs
Еlе- Iso- Сompound
mеn tope
Com-
ponеnt
Do
(сm2/sес)
Еa
(еv)
I-JJ
.1 -ll
-11
. ,.з]
.11
..11
rl
rl
.il
t2l
. r2l
' .ll
'rl
,il
rll
.il
: ,11
- t1l
t1l
l
I '
1l
r 111
Ni NiNoз)z fast
slow.
fast
slow.
fast.
slow.
з.6*10 О25
О47
О27
016
0.3
0.57
U.J
О44
013
0 056
0 31
О28
0 з1
0 15
024
4.7О - 170
470 - 770
470 - 770
410 - 77О
470 - 7'70
4'70 -'7'70
410 -.7'7О
47О - 770
470 -'710
410 - 1'70
470 - 770
470 -'770
4.7О - 770
470 -'/74
470 - 77О
[1,s]
ll,sl
[1,s]
[1,s]
ll,sl
l t,sl
l4l
[11]
t )?1
L-- I
l22l
[14]
I l4]
[11]
lt ll
In
Au
Bi
Ag
сd
.'',In Inсl3
llзsn SnoJoз)z
l95Au AuNoз
207Bi Bi(t.Io3)з
"oAg AgNo3
l25мС Сd (Noз)2
"s vapor
''sе vaрor
3 5*l0'8
g 0* 10-7
g 0* 1o-e
4 O*10j
2 3*10-J
5 0*10-e
4,з*1O.8
13*1O'',
2 '5* |О.1
1,з*1O.6
7 .6* 10'6
6 9* 10-e
1 6* 1O-8
6 g*lo'7
slorv
Гast,
slorv
fast,
slow
Гast.
tl ll
P
f-
bL
.сanciеs had
. сoеffrсiеnt.
- lhе voiumе
::ials, whiсh
...mponеnt oГ
:r inteгgrain
] rеcted with
]', oхygеn ln
- 1Fig. 2a)
This phenomenon may bе сonnесtеd with thе faсt that sulphur is the nеaгest oхygеn
analoguе and is thе most sеnsitivе еlеmеnt to thе struсtural сhangеs in anioniс sublattiсе of
HTsС.
Fig. 2(b) shows that the stoiсhiometгiс dеviation by oхуgen in Сu-o planеs has no an
еssеntial influеncе nеithег volumе nor suгfaсе diffi-lsion oГ sеlеnium. In сasе of sеlеnium
diffusion in (Pb*Bi1.*)2Сa2Sг2Cu3o,, thе surГaсе diГfusion meсhanism is pгobablу dominating
(Fig 3, b).
lt is оharaсtегistiс that on thе сooгdinatе dеpеndenсiеs of bismuth сonсеntгation in the
studiеd сеramiсs, onе position was only obsегvеd (Fig' 2, с and Fig. 3, с). Ехpегimеntal сuгvеs
сonfiгm exponеntial сharactег oftеmpеratuге dеpеndеnсiеs ofdiffusion сoеffiсient and havе no
any peсuliaгitу in thе arеa ofoxygen vaсanсу gеnегation'
Foг YBa:Cuз07.6 сегamiсs,
D: I 0 lO.E еxp1.0.4llkT; сm2/sес
Foг (Pb*B i r.*)2Сa2Sг2Сu3o'-. :
^
D = 4 з 10-. ехp(-0.44lkT) сm,/sес'
Bесausе Do and Еa bismuth diffusion paгamеtеrs slightly dеpеnd on tуpе of HТSС
сегamiсs, we supрosе that the dеfining faсtoг stipulating mеchanism of rеalization is a
polyсrуstalline struсtuгe of studiеd matегials. Tеmpeгatuге dеpеndеnсе of diffusion сoеffiсiеnt
оbsегvеd during thе tеst, may bе сonnесtеd with bismuth migгation thгough thе intегgrain
boundaries and poге suгfaсеs oГ \.Ba:Cuз07.6 and (Pb*Bi1.*)2Сa2Sг2Cuзo,' сeгamiсs.
A highеr D valuе foг (Pb*Bir.,)zCazSrzCuзo, сегamiсs (porositу W - З0 %) in
сoinpaгisonwithYBazСuзoт-всеramiсs(w^-14oА)atthеsamеtеmpеratuге(Fig.2,сand3,с)
and rеlativelу low vatuеs of aсtivatiоn еnегgу of diffusion proсеssеs (0.44 еV and 0.41 еV,
respесtivеlу) with high valuеs of atomiс 'u*,
unс atomiс radius of bismuth approve thе last
u''u'o.'il,umеtегs
of diffusion оf сhеmiсal еlеmеnts in HTSC сeгamiсs in YBazCuзoтs &nc
(pb-Bi,.J,cиSгzCuзo, aге given in Tablеs 1 and2.
iъfi;ТТсkеldiffusion in YBazCuзoт-о and (PbхBir-JzСazSиCщo, сеramiсs /P.P. Gorbik,
V'V. Dуakin, v.M. Ьg.;k",-iд-Chuikq''.N..ыi."u. A.B Gorshkov, F.A' Zaitov,
iм sь"rу"pina//pokiЪпussц sеr A.- 1990. -N7 .P 5l-55
2 Studу of diffusioi of niсkеl, indium and tin in YBazСuзoт.ь / v N. Alfееv,
PPGorbik,V'\,'Dyakin,F,A'Zaitоv,V.N,logenko,G.M.Shalуapina//Supеrсonduсtivitу
FHТ -1990 -v з' N 8 -P 1654-165.7
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P P Goгbik'V, Dyakin' V. ogеnko, V Alfееv, F Zaitoу-, G Shalуapina // Dokl. AN USSR -
l,Т,*T,';" l'.'];1i;' indium and tin in thе (Pb*Bir.JzCazSиCu3o,- сeramiсs / v.N. A.lfееv,
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Fiz Z\-t. -i991.- V 36 -N l -P 100-103
6.Invеstigationof,urpr.,.diffi:siоn.in1.,HTSСсегamiсs/V.}.{.Aifееv,A.AСhuikо,
PP GoгЬik, v.v. оyiйn:vNi'ъ;."r.o, гд 2aitov, G'М Sha.lуapina // Dokl. AN USSR -
}'''l*T'',;*'",i.1Ъ"** P P., Shalуap*? G М Invеstigation of b-ismuth diffusion in HТSС
сеramiсs of (Pb*Br1-*)uCazSrzCuзo, and @bБi,"i,cu,s'iс"3o, i/ Меtallofizikа.-l991.-v.13.
}';"'*Т'lia М V , Goгbik P P.. Shalyapina G|и DiffYs:on:j^:::
1x..?:;r l1'i,.*".З.1"'
ofYBalCuзoт-ьand(Pb*Bir.*)uСazSrzСuзo,.//СhеmiсalTесhnologу-1991..Vl3'N8.-P.62-
66.
9.Еffесtofultгasoundondiffr.rsionof.niсkеlinYBazCuзo7.6.сeгamiсs/V.N.Lysеnko'
VVDуakin, сo,ьiк p]p.,"гд'iuitou, смl.ь.rйina, v's.меlnikov // Supегсonduсtivity,
FнT -i992.-V 5,N 1. .P.1\9-l2z. , -f ^l..l+i^аo ^f c оf
l0 Studу oг ,oruьiritу,,;-iff*i;"^and еffесt of additions of сadmium on propertlеs
polyсгystallinе HTSё, of YBazCu.o,o-
.-"nJ
Gb*Bir.*)zCazSгzСuзo, / V.V.Alеxееnko.
P.P.Gorbik, v.м. Ь,еri;, L.n. сarushr.o.,*u)io."-o;;*ч']u Dуakin, F.A. Zaitov.
G.М. Shalуapi"" /i s;;;;;;nс*tiuitу. FнT..1992 . v 5, N 6, P.1063-1070.
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V T Adonkin, p.p. ЬЪ'iiк, в.м сo.ыo"' ТТ. nyuкin, .V.N Lуsеnko' L.I. Мirontsor,'
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13-20 SБptеmbеr 1992, - P. 181-i84
1<А
-10 %) tn
с and 3, с)
c 041 еV,
:.'.е thе last
- uзou.о and
Р UoгDlK'
.\ Zaltoу,
\ Alfееv,
l": rduсtivitу '
P Gorbik,
::.s - 1991.-
L:sг]Cu]OY /
rr\ ussR -
'. \, A.lfееv,
:::na // Ukr.
r. \ Сhuiko,
r-\ USSR -
..::r in HTSС
r-,991.-V 13,
] SС сeramiсs
r \ 8. -P. 62-
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r: '.nduсtivitу:
:: регtiеs of
...
Alеxееnko,
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255
|
| id | oai:ojs.pkp.sfu.ca:article-64 |
| institution | Surface |
| keywords_txt_mv | keywords |
| language | English |
| last_indexed | 2025-09-24T17:44:40Z |
| publishDate | 2001 |
| publisher | Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine |
| record_format | ojs |
| resource_txt_mv | surfacezbircomua/90/3104ac850a8a6b7f60ab4e8e231fa690.pdf |
| spelling | oai:ojs.pkp.sfu.ca:article-642018-11-27T09:42:39Z Solubility and diffusion of chemical elements in high-temperature superconductors Solubility and diffusion of chemical elements in high-temperature superconductors Solubility and diffusion of chemical elements in high-temperature superconductors Alfeev, V. N. Bakuntseva, M. V. Gorbik, P. P. Zaitov, F. A. Shalyapina, G. M. Solubility and diffusion of admixtures of cationic (Ni, In, Sn, Au, Cd, Bi, Ag, Y, Hg) and anionic (S, Se) subsystems in structural-inhomogeneous HTSC-polycrystalline YBa2Cu307-δ and (PbxBi1-x)2Ca2Sr2Cu3Oy were studied. Methods of radioactive indicators, X-ray spectral microanalysis, scanning electron microscopy, and electron Auger spectroscopy were used. Solubility and diffusion of admixtures of cationic (Ni, In, Sn, Au, Cd, Bi, Ag, Y, Hg) and anionic (S, Se) subsystems in structural-inhomogeneous HTSC-polycrystalline YBa2Cu307-δ and (PbxBi1-x)2Ca2Sr2Cu3Oy were studied. Methods of radioactive indicators, X-ray spectral microanalysis, scanning electron microscopy, and electron Auger spectroscopy were used. Solubility and diffusion of admixtures of cationic (Ni, In, Sn, Au, Cd, Bi, Ag, Y, Hg) and anionic (S, Se) subsystems in structural-inhomogeneous HTSC-polycrystalline YBa2Cu307-δ and (PbxBi1-x)2Ca2Sr2Cu3Oy were studied. Methods of radioactive indicators, X-ray spectral microanalysis, scanning electron microscopy, and electron Auger spectroscopy were used. Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2001-06-10 Article Article application/pdf https://surfacezbir.com.ua/index.php/surface/article/view/64 Surface; No. 4-6 (2001): Chemistry, Physics and Technology of Surface; 248-255 Поверхность; № 4-6 (2001): Химия, физика и технология поверхности; 248-255 Поверхня; № 4-6 (2001): Хімія, фізика та технологія поверхні; 248-255 3154-8091 3154-8083 en https://surfacezbir.com.ua/index.php/surface/article/view/64/63 Авторське право (c) 2001 V.N. Alfeev, M.V. Bakuntseva, P.P. Gorbik, F.A. Zaitov, G.M. Shalyapina |
| spellingShingle | Alfeev, V. N. Bakuntseva, M. V. Gorbik, P. P. Zaitov, F. A. Shalyapina, G. M. Solubility and diffusion of chemical elements in high-temperature superconductors |
| title | Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_alt | Solubility and diffusion of chemical elements in high-temperature superconductors Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_full | Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_fullStr | Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_full_unstemmed | Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_short | Solubility and diffusion of chemical elements in high-temperature superconductors |
| title_sort | solubility and diffusion of chemical elements in high-temperature superconductors |
| url | https://surfacezbir.com.ua/index.php/surface/article/view/64 |
| work_keys_str_mv | AT alfeevvn solubilityanddiffusionofchemicalelementsinhightemperaturesuperconductors AT bakuntsevamv solubilityanddiffusionofchemicalelementsinhightemperaturesuperconductors AT gorbikpp solubilityanddiffusionofchemicalelementsinhightemperaturesuperconductors AT zaitovfa solubilityanddiffusionofchemicalelementsinhightemperaturesuperconductors AT shalyapinagm solubilityanddiffusionofchemicalelementsinhightemperaturesuperconductors |