PHASE-TRANSITIONS IN DISORDERED LEAD IRON NIOBATE - X-RAY AND SYNCHROTRON-RADIATION DIFFRACTION EXPERIMENTS

Authors
BONNY V BONIN M SCIAU P SCHENK KJ CHAPUIS G
Citation
V. Bonny et al., PHASE-TRANSITIONS IN DISORDERED LEAD IRON NIOBATE - X-RAY AND SYNCHROTRON-RADIATION DIFFRACTION EXPERIMENTS, Solid state communications, 102(5), 1997, pp. 347-352
Citations number
23
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
102
Issue
5
Year of publication
1997
Pages
347 - 352
Database
ISI
SICI code
0038-1098(1997)102:5<347:PIDLIN>2.0.ZU;2-V
Abstract
Diffraction above room temperature, on powders and crystals of Pb(Fe0. 5Nb0.5)O-3, using X-rays and synchrotron radiation, led to a novel and consistent picture of the symmetry of the phases in this disordered p erovskite. The compound is a monoclinic ferroelectric at 293 K, underg oes a structural transition to another ferroelectric, tetragonal state at about 355 K and finally transforms into a cubic form at approximat ely 376 K. (C) 1997 Elsevier Science Ltd.