Published September 1, 1997 | Version v1
Journal article Metadata-only

Order and disorder in the relaxor ferroelectric perovskite PbSc1/2Nb1/2O3 (PSN): comparison with simple perovskites BaTiO3 and PbTiO3

Creators

  • 1. Laboratoire de Chimie-Physique du Solide, URA 453 au CNRS, Ecole Centrale, 92295 Chatenay-Malabry Cedex (France)
  • 2. Laboratoire Leon Brillouin, CE Saclay (CEA-CNRS), 91191 Gif-sur-Yvette Cedex (France)
  • 3. Laboratoire pour l'Utilisation du Rayonnement Synchrotron (LURE) (CEA - CNRS), Centre Universitaire Paris-Sud, 91405 Orsay Cedex (France)
  • 4. Laboratoire de Cristallographie (CNRS), BP 166, 3804 Grenoble Cedex 09 (France)
  • 5. Laboratoire de Physico-Chimie Moleculaire et Minerale, URA 1907 au CNRS, Ecole Centrale, 92295 Chatenay-Malabry Cedex (France)

Description

We report a structural evolution analysis of the long-range and local order and disorder of lead scandium niobate PbSc1/2Nb1/2O3 (PSN) down to 10 K, using a combination of neutron and x-ray diffraction on powder and single crystals. The structure of PSN is discussed and compared with those of simple perovskite compounds BaTiO3 and PbTiO3. In PSN the existence of a long-range but still disordered ferroelectric phase, different from those of simple perovskites, is evidenced. The disorder of lead and scandium/niobium atoms on short-, medium- and long-range scales is discussed in connection with the dielectric properties of these materials. (author)

Availability note (English)

Available online at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/

Additional details

Identifiers

URL
http://www.iop.org/;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
9
Journal Issue
35
Journal Page Range
p. 7485-7500
ISSN
0953-8984

INIS

Country of Publication
United Kingdom
Country of Input or Organization
China
INIS RN
32019033
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
COMPARATIVE EVALUATIONS; CUBIC LATTICES; DIELECTRIC PROPERTIES; FERROELECTRIC MATERIALS; LEAD COMPOUNDS; NEUTRON DIFFRACTION; NIOBATES; ORDER-DISORDER TRANSFORMATIONS; SCANDIUM COMPOUNDS; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; DIFFRACTION; ELECTRICAL PROPERTIES; EVALUATION; MATERIALS; NIOBIUM COMPOUNDS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS