COMPARATIVE-STUDY OF TL-2201 SINGLE-CRYSTALS WITH T-C=30-K AND T-C=110-K BY MEANS OF X-RAY STRUCTURAL-ANALYSIS AND NMR

被引：28

作者：

KOLESNIKOV, NN ^{[1
]}

KULAKOV, MP ^{[1
]}

MOLCHANOV, VN ^{[1
]}

SCHEGOLEV, IF ^{[1
]}

SHIBAEVA, RP ^{[1
]}

SIMONOV, VI ^{[1
]}

TAMAZYAN, RA ^{[1
]}

VYASILEV, OM ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST CRISTALLOG,MOSCOW 117333,RUSSIA

来源：

PHYSICA C | 1995年 / 242卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(94)02420-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The crystal structure of a tetragonal single crystal of Tl-2201 with T-c = 30 K has been determined by the X-ray diffraction technique (a=3.8717(3), c=23.224(3) Angstrom, space group I4/mmm, Z=2). The chemical composition is found to be Tl-1.90(1)Cu-0.10(1)Ba2CuO6.18(4). Displacements of Tl and O3 atoms from their symmetric sites have been observed. Structural parameters of Tl-2201 cuprates with various T-c have been compared. The superconducting transition temperature is shown to correlate most strongly with the parameter c, with the length of the bond between Cu and apical oxygen as well as with the distance between Ba2+ and the cuprate plane.

引用

页码：385 / 392

页数：8

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