STRUCTURAL STUDY OF LANTHANUM OXYSULFATE (LAO)(2)SO4

Authors
ZHUKOV S YATSENKO A CHERNYSHEV V TRUNOV V TSERKOVNAYA E ANTSON O HOLSA J BAULES P SCHENK H
Citation
S. Zhukov et al., STRUCTURAL STUDY OF LANTHANUM OXYSULFATE (LAO)(2)SO4, Materials research bulletin, 32(1), 1997, pp. 43-50
Citations number
20
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
32
Issue
1
Year of publication
1997
Pages
43 - 50
Database
ISI
SICI code
0025-5408(1997)32:1<43:SSOLO(>2.0.ZU;2-E
Abstract
The structure of lanthanum oxysulfate (LaO)(2)SO4 was studied with neu tron, electron, and X-ray diffraction using the Rietveld refinement me thod. The unit cell is determined to be monoclinic (a = 14.349(1), b = 4.2852(5), c = 8.386(1) Angstrom, beta = 107.00(1), Sp.gr. C2/c). The structure is similar to that of grandreefite and consists of the alte rnative sulfate and (LaO) layers. Every sulfate oxygen is coordinated with two lanthanum atoms. The experimental data were confirmed by the energy minimization calculations.