STABILIZATION OF SUPERCONDUCTIVITY IN TLBA2CUO5-DELTA AT 9.5-K AND ITS ENHANCEMENT TO 43-K IN TLBASRCUO5-DELTA

被引：40

作者：

GOPALAKRISHNAN, IK

YAKHMI, JV

IYER, RM

机构：

[1] Chemistry Division, Bhabha Atomic Research Centre, Bombay

来源：

PHYSICA C | 1991年 / 175卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(91)90250-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It is shown that the superconducting state can be stabilized (T(c) = 9.5 K) by slow-cooling TlBa2CuO5 in a nitrogen environment. Interestingly, partial substitution (50%) of Ba2+ by Sr2+ yields a zero-resistance state at 33 K in TlBaSrCuO5, even for air-quenched samples. T(c) could be further enhanced to 43 K (R = 0) by a slow cooling treatment in flowing nitrogen. Contraction of the lattice for TlBaSrCuO5-delta in comparison with TlBa2CuO5, supports the substitution of Sr2+-ions at Ba-sites.

引用

收藏

页码：183 / 186

页数：4

相关论文

共 23 条

[1] MICROSTRUCTURE AND SUPERCONDUCTIVITY IN A NEW SUPERCONDUCTOR SERIES - (TL,PB)1SR2CAN-1CUNO2N+3-OMEGA [J].

BARRY, JC ;

IQBAL, Z ;

RAMAKRISHNA, BL ;

SHARMA, R ;

ECKHARDT, H ;

REIDINGER, F .

JOURNAL OF APPLIED PHYSICS, 1989, 65 (12) :5207-5209

[2] CRYSTALLOGRAPHY AND MICROSTRUCTURE OF TL-CA-BA-CU-O SUPERCONDUCTING OXIDES [J].

BEYERS, R ;

PARKIN, SSP ;

LEE, VY ;

NAZZAL, AI ;

SAVOY, R ;

GORMAN, G ;

HUANG, TC ;

LAPLACA, S .

APPLIED PHYSICS LETTERS, 1988, 53 (05) :432-434

[3] TI1-XPRXSR2-YPRYCUO5-DELTA - 1ST MEMBER OF THE FAMILY TIA2CAM-1CUMO2M+3 (A = BA, SR) [J].

BOURGAULT, D ;

MARTIN, C ;

MICHEL, C ;

HERVIEU, M ;

PROVOST, J ;

RAVEAU, B .

JOURNAL OF SOLID STATE CHEMISTRY, 1989, 78 (02) :326-328

[4] TLCABASRCU2O7-DELTA, A NEW 94-K SUPERCONDUCTOR [J].

GOPALAKRISHNAN, IK ;

YAKHMI, JV ;

IYER, RM .

PHYSICA C, 1991, 172 (5-6) :450-454

[5] BULK SUPERCONDUCTIVITY AT 122-K IN TL(BA,CA)2CA3-CU4O10.5+DELTA WITH 4 CONSECUTIVE COPPER LAYERS [J].

HALDAR, P ;

CHEN, K ;

MAHESWARAN, B ;

ROIG, A ;

JAGGI, NK ;

MARKIEWICZ, RS ;

GIESSEN, BC .

SCIENCE, 1988, 241 (4870) :1198-1200

[6]

IQBAL Z, 1989, STUDIES HIGH TEMPERA, V3, P369

[7]

IYER RM, 1989, STUDIES HIGH TEMPERA, V3, P320

[8] NEW HIGH-TEMPERATURE SUPERCONDUCTING OXIDES - (LA1-XSRX)2CUO4-DELTA AND (LA1-XCAX)2CUO4-DELTA [J].

KISHIO, K ;

KITAZAWA, K ;

KANBE, S ;

YASUDA, I ;

SUGII, N ;

TAKAGI, H ;

UCHIDA, SI ;

FUEKI, K ;

TANAKA, S .

CHEMISTRY LETTERS, 1987, (02) :429-432

[9] THE OCCURRENCE OF SUPERCONDUCTIVITY IN THE TLBA2CUO5-DELTA-TYPE-(1021) SYSTEM [J].

KU, HC ;

TAI, MF ;

SHI, JB ;

SHIEH, MJ ;

HSU, SW ;

HWANG, GH ;

LING, DC ;

WATSONYANG, TJ ;

LIN, TY .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (06) :L923-L925

[10]

KWEI GH, 1990, PHYSICA C