NEUTRON POWDER DIFFRACTION ON YBA2(CU1-X (NI-X)-NI-58)3O7-DELTA

被引：16
作者：
BALAGUROV, AM [1 ]
PIECHOTA, J [1 ]
PAJACZKOWSKA, A [1 ]
机构：
[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND
来源：
SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 05期
关键词：
D O I：
10.1016/0038-1098(91)90694-Q
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Neutron powder diffraction study of YBa2(Cu1-x Ni(x))3O7-delta with Ni-58 (x = 0.05. 0.09) as well as with a natural mixture of Ni isotopes (x = 0.06. 0.15) was carried out for the first time. The results obtained suggest that nickel substitutes for copper at least to concentration of x = 0.07, and for all x studied the structure resembles that of undoped YBa2Cu3O7-delta. Relative coordinates of atoms are, in practice, unchanged. The Ni atoms substitute the Cu cations located both in Cu-O chains and in the CuO2 planes with equal probabilities. Our results confirmed that the solubility of Ni in the structure of YBa2Cu3O7-delta phase is limited and much lower than that of Fe.
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页码：407 / 411
页数：5
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