CRYSTAL-STRUCTURE OF BI2SR2CUO6 - A STRUCTURE BASED ON PERIODIC CRYSTALLOGRAPHIC SHEAR PLANES IN THE 2201-STRUCTURE

被引：14

作者：

DARRIET, J ^{[1
]}

WEILL, F ^{[1
]}

DARRIET, B ^{[1
]}

ZHANG, XF ^{[1
]}

ETOURNEAU, J ^{[1
]}

机构：

[1] UNIV ANTWERP,RUCA,EMAT,B-2020 ANTWERP,BELGIUM

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 86卷 / 04期

关键词：

D O I：

10.1016/0038-1098(93)90493-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure of the insulating phase Bi2Sr2CuO6 is reported. The refinements were performed on X-ray and neutron powder diffraction data. The R values were R(i) = 10.56% (R(p) = 6.67%, R(wp) = 8.40%) for X-ray and R(i) = 7.47% (R(p) = 5.01%, R(wp) = 6.45%) for neutron data. The structure is derived from that of the pseudo-tetragonal ''2201'' phase by a periodic crystallographic shear parallel to the c(tetr.) axis. Slabs of ''2201'' type with a thickness of eight octahedra are then formed which are parallel to (001). The beta angle of the monoclinic cell results from the periodic crystallographic shear which is a simple translation along the c axis. This structural model has been confirmed by HRTEM where the slabs of ''2201'' have been observed.

引用

页码：227 / 230

页数：4

共 11 条

[1] CHARACTERIZATION AND SUPERCONDUCTING PROPERTIES OF PHASES IN THE BI-SR-CU-O SYSTEM [J].