Crystallographic structure of lead hafnate (PbHfO3) from neutron powder diffraction and electron microscopy

Authors
Madigou, V Baudour, JL Bouree, F Favotto, C Roubin, M Nihoul, G
Citation
V. Madigou et al., Crystallographic structure of lead hafnate (PbHfO3) from neutron powder diffraction and electron microscopy, PHIL MAG A, 79(4), 1999, pp. 847-858
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS ANDMECHANICAL PROPERTIES
ISSN journal
13642804 → ACNP
Volume
79
Issue
4
Year of publication
1999
Pages
847 - 858
Database
ISI
SICI code
1364-2804(199904)79:4<847:CSOLH
Abstract
The structure of lead hafnate has been accurately determined at 10K and at room temperature by two different diffraction methods: neutron powder and e lectron diffraction. Results from the two methods are in good agreement. Th e structure is shown to be isomorphic to the lead zirconate structure, alth ough its behaviour with temperature is very different from that of lead zip conate. It is also shown that the centrosymmetric structure is more probabl e than the noncentrosymmetric one.