CRYSTAL-STRUCTURE OF THE HOBA2CU3OX SUPERCONDUCTOR DETERMINED BY X-RAY-POWDER DIFFRACTION

被引：11

作者：

ASANO, H

ISHIGAKI, T

TAKITA, K

机构：

[1] Univ of Tsukuba, Sakura-mura, Jpn, Univ of Tsukuba, Sakura-mura, Jpn

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1987年 / 26卷 / 05期

关键词：

BARIUM COMPOUNDS - Electric Conductivity - CERAMIC MATERIALS - CRYSTALS - Structure;

D O I：

10.1143/JJAP.26.L714

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The crystal structure of HoBa//2Cu//3O//7 has been determined by Rietveld analysis of X-ray powder diffraction data. The structure is orthorhombic (space group Pmmm) with lattice parameters a equals 3. 8850(1) Angstrom, b equals 3. 8192(1) Angstrom and c equals 11. 6770(2) Angstrom, and isomorphic with YBa//2Cu//3O//7// minus //y. Ordering of Ho and Ba, oxygen deficiency in the z equals one-half plane and selective occupancy of oxygen on the basal plane are the common structural feature of the high T//c superconductors.

引用

页码：L714 / L715

页数：2