Synthesis, structure and ferroelectric properties of heteroblock slab phases in La2Ti2O7-LaTaO4 system

Authors
Titov, YA Sych, AM Markiv, VY Belyavina, NM Kapshuk, AA Yaschuk, VP
Citation
Ya. Titov et al., Synthesis, structure and ferroelectric properties of heteroblock slab phases in La2Ti2O7-LaTaO4 system, J ALLOY COM, 316(1-2), 2001, pp. 309-315
Citations number
10
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN journal
09258388 → ACNP
Volume
316
Issue
1-2
Year of publication
2001
Pages
309 - 315
Database
ISI
SICI code
0925-8388(20010302)316:1-2<309:SSAFPO>2.0.ZU;2-V
Abstract
The succession of phase transformations in the La2Ti2O7-LaTaO4 system on he at treatment of the co-precipitated crystallized hydroxides has been studie d. We have studied the possibility of the formation of a number of heterobl ock polar slab phases La4p+2qTi4pTa2qO14p+8q (p=1, q=1, 2, 3, 5) having an ordered arrangement of alternating perovskite-type blocks of two and four B O6 octahedron slabs. The crystal structure has been determined and the spon taneous polarization has been estimated. (C) 2001 Published by Elsevier Sci ence B.V.