THE CRYSTAL-STRUCTURE OF (C0.4CU0.6)SR2(Y0.86SR0.14)CU2O7

被引：103
|
作者：
MIYAZAKI, Y [1 ]
YAMANE, H [1 ]
OHNISHI, N [1 ]
KAJITANI, T [1 ]
HIRAGA, K [1 ]
MORII, Y [1 ]
FUNAHASHI, S [1 ]
HIRAI, T [1 ]
机构：
[1] JAPAN ATOM ENERGY RES INST,DEPT PHYS,TOKAI,IBARAKI 31911,JAPAN
来源：
PHYSICA C | 1992年 / 198卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(92)90258-E
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The crystal structure of a new compound, (C0.4Cu0.6)Sr2(Y0.86Sr0.14)Cu2O7, is derived from the structure of YBa2CU307. Forty percent of CuO chains in the YBa2Cu3O7 Structure are replaced by CO3 groups. This new compound has a superstructure along the a-axis and the c-axis. Diffuse superlattice reflections having periods of a*/2-a*/3 and c*/2 were observed in electron diffraction patterns. Locally ordered distributions of C and Cu atoms were seen in high-resolution images taken by transmission electron microscopy with an incident beam parallel to [010]. The basic structure of this superstructure was determined by neutron powder diffraction, assuming orthorhombic symmetry with the space group, Pmmm (lattice constants: a = 3.8278 (2), b = 3.8506 (2) and c = 11.1854(5)angstrom).
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页码：7 / 13
页数：7
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