A COMPARATIVE-STUDY ON THE STRUCTURE OF APBO(3) (A=BA,SR)

被引：32

作者：

FU, WT

IJDO, DJW

机构：

[1] Leiden Institute of Chemistry, Gorlaeus Laboratories Leiden University, 2300 RA Leiden

来源：

SOLID STATE COMMUNICATIONS | 1995年 / 95卷 / 09期

关键词：

CHEMICAL SYNTHESIS; CRYSTAL STRUCTURE AND SYMMETRY; ELECTRONIC BAND STRUCTURE;

D O I：

10.1016/0038-1098(95)00334-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A comparative structural study of the tetravalent plumbates, BaPbO3 and SrPbO3, has been carried out by using neutron powder diffraction technique. Both compounds are an orthorhombic distortion of the perovskite structure, with the lattice parameters related to that of the ideal cubic-perovskite (a(p)) by a approximate to root 2a(p), b approximate to root 2a(p), and c approximate to 2a(p). The structure of BaPbO3 (Ibmm) consists of the PbO6 octahedra tilted around the primitive [110](p) axis, whereas the tilts of the PbO6 octahedra in SrPbO3 (Pbnm) are about the [110](p) and [001](p) axis respectively. These different tilts, necessary to keep the stable perovskite structure, are discussed and the influence of octahedral distortions on the physical properties of the relevant compounds are considered.

引用

页码：581 / 585

页数：5

共 25 条

[1] SUPERCONDUCTIVITY AT 3.5-K IN BAPB0.75SB0.25O3 - WHY IS TC SO LOW [J].