AN X-RAY AND NEUTRON-DIFFRACTION STUDY OF CATION SUBSTITUTED TLSR2CUO5

被引：22

作者：

KOVATCHEVA, D

HEWAT, AW

RANGAVITTAL, N

MANIVANNAN, V

ROW, TNG

RAO, CNR

机构：

[1] INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT,BANGALORE 560012,KARNATAKA,INDIA

[2] ACAD SCI SOFIA,INST GEN & INORGAN CHEM,BU-1040 SOFIA,BULGARIA

来源：

PHYSICA C | 1991年 / 173卷 / 5-6期

关键词：

D O I：

10.1016/0921-4534(91)90746-L

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structures of TlSr(2-x)La(x)CuO(5+delta), with x = 0.5, 0.75 and 1, and Tl0.5Pb0.5Sr2CuO(5+delta) have been examined with X-ray and neutron powder Rietveld refinement. They are isostructural (P4/mmm) with the corresponding thallium-barium cuprate having one Cu-O layer with Cu3+ ions in octahedral coordination with oxygen (structure type 1201). The influence of cation substitution and disorder on the structure and superconducting properties of these phases has been investigated. La3+ substitution for Sr2+ stabilises the structure and reduces Cu3+, permitting superconductivity, while Pb2+ substitution for Tl3+ only stabilises the structure, without reducing Cu3+.

引用

页码：444 / 452

页数：9

共 20 条

[1] A NOTE ON THE SYMMETRY AND BI VALENCE OF THE SUPERCONDUCTOR BI2SR2CA1CU2O8
BORDET, P
CAPPONI, JJ
CHAILLOUT, C
CHENAVAS, J
HEWAT, AW
HEWAT, EA
HODEAU, JL
MAREZIO, M
THOLENCE, JL
TRANQUI, D
[J]. PHYSICA C, 1988, 156 (01): : 189 - 192
[2] BOURGAULT D, 1988, J SOLID STATE CHEM, V75, P212
[3] A DETERMINATION OF THE OXIDATION-STATES AND INTERNAL-STRESSES IN BA2YCU3OX,X=6-7 USING BOND VALENCES
BROWN, ID
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1989, 82 (01) : 122 - 131
[4] BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE
BROWN, ID
ALTERMATT, D
[J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG): : 244 - 247
[5] MAXIMUM TRANSITION-TEMPERATURES AND BOND VALENCE SUMS IN COPPER-OXIDE SUPERCONDUCTORS - THE INFLUENCE OF INTERNAL STRAIN
BROWN, ID
[J]. PHYSICA C, 1990, 169 (1-2): : 105 - 106
[6] CRYSTAL-STRUCTURE OF THE HIGH-TEMPERATURE SUPERCONDUCTOR LA1.85SR0.15CUO4 ABOVE AND BELOW TC
CAVA, RJ
SANTORO, A
JOHNSON, DW
RHODES, WW
[J]. PHYSICAL REVIEW B, 1987, 35 (13): : 6716 - 6720
[7] STRUCTURAL ANOMALIES, OXYGEN ORDERING AND SUPERCONDUCTIVITY IN OXYGEN DEFICIENT BA2YCU3OX
CAVA, RJ
HEWAT, AW
HEWAT, EA
BATLOGG, B
MAREZIO, M
RABE, KM
KRAJEWSKI, JJ
PECK, WF
RUPP, LW
[J]. PHYSICA C, 1990, 165 (5-6): : 419 - 433
[8] CORRELATION BETWEEN THE SUPERCONDUCTING TRANSITION-TEMPERATURE AND CRYSTAL-STRUCTURE OF HIGH-TC CUPRATE COMPOUNDS
DELEEUW, DM
GROEN, WA
FEINER, LF
HAVINGA, EE
[J]. PHYSICA C, 1990, 166 (1-2): : 133 - 139
[9] STRUCTURAL PHASE-TRANSITION AT 150K IN THE HIGH-TEMPERATURE SUPERCONDUCTOR LA1.85SR0.15CUO4
FRANCOIS, M
YVON, K
FISCHER, P
DECROUX, M
[J]. SOLID STATE COMMUNICATIONS, 1987, 63 (01) : 35 - 40
[10] NEW FAMILY OF THALLIUM CUPRATE SUPERCONDUCTORS NOT CONTAINING CALCIUM OR BARIUM - TLSRN+1-XLAXCUNO2N+3+DELTA, TLSRN+1-XPRXCUNO2N+3+DELTA, TLSRN+1-XNDXCUNO2N+3+DELTA
GANGULI, AK
MANIVANNAN, V
SOOD, AK
RAO, CNR
[J]. APPLIED PHYSICS LETTERS, 1989, 55 (25) : 2664 - 2666

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