STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF Y1-2XCAXPRXBA2CU3O7-GAMMA

被引：10

作者：

ANDERSSON, M ^{[1
]}

RAPP, O ^{[1
]}

HEGEDUS, Z ^{[1
]}

WEN, TL ^{[1
]}

NYGREN, M ^{[1
]}

机构：

[1] UNIV STOCKHOLM,ARRHENIUS LAB,DEPT INORGAN CHEM,S-10691 STOCKHOLM,SWEDEN

来源：

PHYSICA C | 1992年 / 190卷 / 03期

关键词：

D O I：

10.1016/0921-4534(92)90603-A

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Samples of the nominal composition Y1-2xCaxPrxBa2Cu3O7-delta with 0 less-than-or-equal-to x less-than-or-equal-to 0.4 have been studied by X-ray diffraction techniques, chemical analyses, and measurements of the super conducting transition temperature and the upper critical magnetic field. For x less-than-or-equal-to 0.25, the results indicate that Ca and Pr can both replace Y in agreement with the nominal composition, while for x > 0.25 only Pr enters the orthorhombic unit cell. Compared to Pr substitution in 1:2:3 we observe small changes in the depression of T(c) and strong changes in the critical field slopes. These results suggest that if Pr has a magnetic pair-breaking effect, it is close to being temperature independent.

引用

页码：255 / 260

页数：6

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