SUPERCONDUCTING AND NORMAL STATE PROPERTIES OF THE Y1-XCDXBA2CU3O7-DELTA SYSTEM

被引：9

作者：

CHEN, JW ^{[1
]}

CHEN, CF ^{[1
]}

CHANG, TC ^{[1
]}

YAO, YD ^{[1
]}

机构：

[1] ACAD SINICA,INST PHYS,TAIPEI 115,TAIWAN

来源：

PHYSICA C | 1990年 / 165卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(90)90205-S

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The superconducting and normal state properties of the pseudoquaternary system Y1-xCdxBa2Cu3O7-δ with 0≤x≤1.0 were investigated by means of the AC electrical resistance, DC magnetization and powder X-ray diffraction measurements. For Cd concentration x≤0.6, X-ray diffraction pattern reveals that the majority phase of the samples is of the oxygen deficiency perovskite type with a gradual change from orthorhombic to tetragonal structure as x increases. The superconducting transition temperature Tc was observed to remain almost unchanged up to x{reversed tilde equals}0.6. This means the superconductivity occurs in orthorhombic structure as well as in the tetragonal structure. However, DC magnetization measurements taken at H=20 G indicate that the superconducting volume fraction in the sample decreases as x increases, although Tc remains unchanged, which shows that superconductivity in these samples is of granular characteristic. © 1990.

引用

页码：287 / 292

页数：6

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