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.
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页码：255 / 260
页数：6
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