NEUTRON-DIFFRACTION STUDIES OF CA-PR DOPED YBA2CU3O7-DELTA

被引：20

作者：

ANDERSSON, M ^{[1
]}

RAPP, O ^{[1
]}

TELLGREN, R ^{[1
]}

机构：

[1] UNIV UPPSALA,INST CHEM,S-75121 UPPSALA,SWEDEN

来源：

PHYSICA C | 1993年 / 205卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(93)90174-O

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have performed neutron powder diffraction on samples in a series Y1-2xCaxPrxBa2Cu3O7-delta, with x=0.0, 0.1 and 0.2, and analyzed the data with the Rietveld refinement method. Small changes were observed in atomic bond distances when the amount of Ca-Pr was increased. In general, these changes could qualitatively be viewed as the sum of effects from the Ca and Pr substitutions in YBa2Cu3O7-delta samples. Analyses of the distance between the superconducting CuO2 Planes suggest that the Pr ions in the Ca-Pr substituted samples have an effective valence close to + 4.

引用

页码：105 / 110

页数：6

共 19 条

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