EMERGENCE OF 2 SUPERCONDUCTING PHASES (33K AND 40K) AND THEIR RELATION TO STRUCTURAL PHASE-TRANSITIONS IN CRYSTALLINE LA2CUO4.011

被引：17

作者：

KYOMEN, T ^{[1
]}

OGUNI, M ^{[1
]}

ITOH, M ^{[1
]}

YU, JD ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,ENGN MAT RES LAB,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.51.3181

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Adiabatic calorimetry revealed three structural phase transitions existing in La2CuO4.011 single crystal; the higher-order type at 287 K, the Martensitic type at 265 K, and the first-order type at 222 K. The phase stable between 222 and 265 K can be supercooled easily and shows superconductivity with onset at 33 K, while the phase stable below 222 K does that at 40 K. The annealing effects on the structural phase transitions are discussed in correlation with different appearances of the superconducting transition temperature and of the Meissner fraction. © 1995 The American Physical Society.

引用

页码：3181 / 3185

页数：5

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