Published November 6, 2007 | Version v1
Journal article Metadata-only

Crystal structures and phase transitions in Ba2HoTaO6

Creators

  • 1. School of Chemistry, University of Sydney, Sydney, NSW, 2006 (Australia)
  • 2. Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531 (Japan)
  • 3. RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)

Description

The structure of the cation-ordered double perovskite Ba2HoTaO6 was examined using synchrotron X-ray powder diffraction at fine temperature intervals over the range of 90-300 K. Ba2HoTaO6 has a cubic structure in space group Fm3-barm at room temperature. A proper ferroelastic phase transition to I4/m tetragonal symmetry occurs near approximately 260 K. Analysis of the spontaneous tetragonal strain versus temperature indicated that the phase transition is second order in nature

Availability note (English)

Available from http://dx.doi.org/10.1016/j.materresbull.2007.07.027

Additional details

Identifiers

DOI
10.1016/j.materresbull.2007.07.027;
PII
S0025-5408(07)00324-8;

Publishing Information

Journal Title
Materials Research Bulletin
Journal Volume
42
Journal Issue
11
Journal Page Range
p. 1875-1880
ISSN
0025-5408
CODEN
MRBUAC

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39077062
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM COMPOUNDS; HOLMIUM COMPOUNDS; OXIDES; PEROVSKITE; PHASE TRANSFORMATIONS; SPACE GROUPS; STRAINS; SYNCHROTRONS; TANTALUM COMPOUNDS; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; TETRAGONAL LATTICES; X-RAY DIFFRACTION
Descriptors DEC
ACCELERATORS; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CYCLIC ACCELERATORS; DIFFRACTION; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; PEROVSKITES; RARE EARTH COMPOUNDS; REFRACTORY METAL COMPOUNDS; SCATTERING; SYMMETRY GROUPS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.