THERMAL-EXPANSION AND OXYGEN NONSTOICHIOMETRY IN HIGH-TC YBA2CU3OX SUPERCONDUCTOR

被引：7
作者：
OLEKHNOVICH, NM
ZHABKO, TE
ORLOVA, NS
JANOVICH, VD
PASHKOVSKII, OI
ZYKOVA, TL
机构：
来源：
CRYSTAL RESEARCH AND TECHNOLOGY | 1991年 / 26卷 / 06期
关键词：
D O I：
10.1002/crat.2170260614
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The lattice parameters as well as the axial thermal expansion coefficients for YBa2Cu3O(x) superconducting oxide ceramics with different oxygen content ranging from x = 6.14 to x = 6.95 are determined as a function of temperature between 80 and 400 K using X-ray powder diffractometry technique. The effect of oxygen concentration on the thermal expansion behaviour is regarded. The values of alpha are found to decrease with the oxygen content reducing and depend on the condition of heat treatment. The essential anisotropy of thermal expansion is shown to exist, with alpha-c being larger than alpha-a and alpha-b. The relationship between alpha-a and alpha-b depends both on the sample preparation conditions and temperature.
引用
收藏
页码：747 / 755
页数：9
相关论文
共 25 条
[1]  
ALEKSANDROV OV, 1988, FIZ TVERD TELA+, V30, P2052
[2]  
ANDREYEV AV, 1988, FIZ MET METALLOVED+, V66, P186
[3]  
ANSCHUKOVA NV, 1987, PISMA JETF USSR, V46, P373
[4]   STUDIES OF OXYGEN-DEFICIENT BA2YCU3O7-DELTA AND SUPERCONDUCTIVITY BI(PB)-SR-CA-CU-O [J].
CAVA, RJ ;
BATLOGG, B ;
SUNSHINE, SA ;
SIEGRIST, T ;
FLEMING, RM ;
RABE, K ;
SCHNEEMEYER, LF ;
MURPHY, DW ;
VANDOVER, RB ;
GALLAGHER, PK ;
GLARUM, SH ;
NAKAHARA, S ;
FARROW, RC ;
KRAJEWSKI, JJ ;
ZAHURAK, SM ;
WASZCZAK, JV ;
MARSHALL, JH ;
MARSH, P ;
RUPP, LW ;
PECK, WF ;
RIETMAN, EA .
PHYSICA C, 1988, 153 :560-565
[5]  
GOLOLBOV EM, 1988, IZV AN BSSR FMN, P67
[6]  
GOLOVASHKIN AI, 1987, JETP LETT+, V46, P325
[7]   STRUCTURAL TRANSFORMATIONS OF THE YBA2CU3O6.84 CRYSTAL-LATTICE IN THE TEMPERATURE INTERVAL 9 K TO 300 K [J].
KONSTANTINOVIC, J ;
PARETTE, G ;
DJORDJEVIC, Z ;
MENELLE, A .
SOLID STATE COMMUNICATIONS, 1989, 70 (02) :163-166
[8]   STRUCTURAL SINGULARITIES IN THE VICINITY OF SUPERCONDUCTIVE TRANSITION IN YBA2CU3O7-BBAR MATERIAL [J].
KONSTANTINOVIC, J ;
DJORDJEVIC, Z ;
PARETTE, G ;
MENELLE, A .
SOLID STATE COMMUNICATIONS, 1989, 70 (02) :159-162
[9]   HIGH-TEMPERATURE X-RAY-POWDER DIFFRACTOMETRIC STUDIES OF THE SUPERCONDUCTING COMPOUND YBA2CU3O7-X FROM ROOM-TEMPERATURE TO 1300-K IN AIR [J].
MOMIN, AC ;
MATHEWS, MD ;
JAKKAL, VS ;
GOPALAKRISHNAN, IK ;
YAKHMI, JV ;
IYER, RM .
SOLID STATE COMMUNICATIONS, 1987, 64 (03) :329-333
[10]  
OBOLENSKII MA, 1988, FIZ NIZK TEMP+, V14, P863
123