THERMAL-EXPANSION OF ORTHORHOMBIC AND TETRAGONAL PHASES OF THE HIGH T(C) SUPERCONDUCTORS RE1BA2CU3OY (RE = Y, GD, DY)

被引：6

作者：

PRAKASH, OM ^{[1
]}

RAO, A ^{[1
]}

PRAKASH, O ^{[1
]}

DHEER, PN ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DIV MAT SCI,BOMBAY 400076,INDIA

来源：

PRAMANA-JOURNAL OF PHYSICS | 1993年 / 41卷 / 05期

关键词：

THERMAL EXPANSION; HIGH TEMPERATURE SUPERCONDUCTORS; DISCONTINUITY IN ALPHA; GROWTH CONDITIONS; IODOMETRIC TITRATION;

D O I：

10.1007/BF02847448

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the coefficient of linear thermal expansion alpha have been carried out for the orthorhombic and tetragonal phases of RE1Ba2Cu3Oy(RE = Y, Gd, Dy) compounds using a high resolution capacitance dilatometer in the temperature range 77-300 K. All the superconducting samples exhibit a jump DELTAalpha at their respective transition temperatures, T(c). Evidences of, sample-to-sample variation in alpha values and dependence of DELTAalpha on the sample preparation conditions, have been obtained. The non-superconducting samples, in general, exhibit lower values of alpha possibly because of lowering of oxygen content.

引用

页码：421 / 428

页数：8

共 18 条

[1] THERMAL-EXPANSION OF A YBA2CU3O7 SUPERCONDUCTING CERAMIC [J].

BAYOT, V ;

DEWITTE, C ;

ERAUW, JP ;

GONZE, X ;

LAMBRICHT, M ;

MICHENAUD, JP .

SOLID STATE COMMUNICATIONS, 1987, 64 (03) :327-328

[2]

BRAUN E, 1991, Z PHYS B, V84, P331

[3] LOW FIELD MAGNETORESISTANCE UP TO 1T IN AS DOPED Y1BA2CU3O9-Y [J].

DAS, SN ;

KAPOOR, R ;

DUBEY, SS ;

DHEER, PN .

PHYSICA B, 1990, 163 (1-3) :245-248

[4] THERMAL-EXPANSION AND MAGNETOSTRICTION IN A POLYCRYSTALLINE YBA2CU3O7 SUPERCONDUCTOR [J].

DELACHEISSERIE, ED ;

BARBARA, B ;

HENRY, JH .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 71 (02) :L125-L130

[5] MAGNETOSTRICTION AND THERMAL-EXPANSION OF HIGH-TC MAGNETIC SUPERCONDUCTORS REBA2CU3O7-X (RE = SM, EU, GD, DY, HO, ER, TM AND Y) [J].

DELMORAL, A ;

IBARRA, MR ;

ALGARABEL, PA ;

ARNAUDAS, JI .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 161 (01) :48-58

[6] DISCONTINUITY IN SOUND-VELOCITY AND HIGH-TC SUPERCONDUCTIVITY IN YBA2CU3O7 [J].

HORIE, Y ;

MASE, S .

SOLID STATE COMMUNICATIONS, 1989, 69 (05) :535-538

[7] THERMAL-EXPANSION MEASUREMENTS OF GDBA2CU3O7 [J].

KADOWAKI, K ;

KAYZEL, FE ;

FRANSE, JJM .

PHYSICA C, 1988, 153 :1028-1029

[8]

KISIL OL, 1989, SOV J LOW TEMP PHYS, V15, P543

[9] STRONG TIME-DEPENDENCE OF THE SAMPLE LENGTH OF YBA2CU3O7-DELTA BETWEEN 30 AND 70K [J].

LANG, M ;

KURSCH, R ;

STEGLICH, F ;

TACHIKI, M ;

WOLF, T .

PHYSICA C, 1991, 185 (pt 2) :939-940

[10] THERMAL-EXPANSION, SPECIFIC-HEAT, AND PRESSURE-DEPENDENCE OF TC IN YBA2(CU1-XFEX)3O7-DELTA, YBA2(CU1-XZN)3O7-DELTA [J].

MEINGAST, C ;

AHRENS, R ;

BLANK, B ;

BURKLE, H ;

RUDOLF, B ;

WUHL, H .

PHYSICA C, 1991, 173 (5-6) :309-321

← 1 2 →