Diffuse phase transition in Ba5RTi3Nb7O30 [R = La, Y] ferroelectric ceramics

Authors
Shannigrahi, SR Choudhary, RNP Kumar, A Acharya, HN
Citation
Sr. Shannigrahi et al., Diffuse phase transition in Ba5RTi3Nb7O30 [R = La, Y] ferroelectric ceramics, I J PA PHYS, 37(6), 1999, pp. 476-481
Citations number
21
Categorie Soggetti
Physics
Journal title
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
ISSN journal
00195596 → ACNP
Volume
37
Issue
6
Year of publication
1999
Pages
476 - 481
Database
ISI
SICI code
0019-5596(199906)37:6<476:DPTIB[>2.0.ZU;2-0
Abstract
Polycrystalline samples of Ba5RTi3Nb7O30 [R = La, Y] complex tungsten bronz e (TB) type compounds have been prepared by high- temperature solid-state r eaction technique. Preliminary X- ray structural analysis of the compounds suggests the formation of single-phase orthorhombic compounds at room tempe rature. Dielectric studies as a function of frequency (0.4 to 10 kHz) at di fferent temperatures (from liquid nitrogen temperature to 300 degrees C) sh ow diffuse ferroelectric phase transition in these compounds.