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

Authors
FU WT IJDO DJW
Citation
Wt. Fu et Djw. Ijdo, A COMPARATIVE-STUDY ON THE STRUCTURE OF APBO(3) (A=BA,SR), Solid state communications, 95(9), 1995, pp. 581-585
Citations number
25
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
95
Issue
9
Year of publication
1995
Pages
581 - 585
Database
ISI
SICI code
0038-1098(1995)95:9<581:ACOTSO>2.0.ZU;2-R
Abstract
A comparative structural study of the tetravalent plumbates, BaPbO3 an d SrPbO3, has been carried out by using neutron powder diffraction tec hnique. Both compounds are an orthorhombic distortion of the perovskit e 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 (Ib mm) consists of the PbO6 octahedra tilted around the primitive [110](p ) axis, whereas the tilts of the PbO6 octahedra in SrPbO3 (Pbnm) are a bout the [110](p) and [001](p) axis respectively. These different tilt s, necessary to keep the stable perovskite structure, are discussed an d the influence of octahedral distortions on the physical properties o f the relevant compounds are considered.