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Title: Landau Theory Applied to Phase Transitions in Calcium Orthotungstate and Isostructural Compounds

Abstract

The pressure-driven tetragonal-to-monoclinic phase transition in CaWO4 and related scheelite-structured orthotungstates is analysed in terms of spontaneous strains. Based upon our previous high-pressure X-ray diffraction results and the Landau theory, it is suggested that the scheelite-to-fergusonite transition is of second order in nature.

Authors:
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
959672
Report Number(s):
BNL-82658-2009-JA
Journal ID: ISSN 0295-5075; EULEEJ; TRN: US201016%%816
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Europhysics Letters; Journal Volume: 77
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCIUM; STRAINS; X-RAY DIFFRACTION; PHASE TRANSFORMATIONS; national synchrotron light source

Citation Formats

Errandonea,D. Landau Theory Applied to Phase Transitions in Calcium Orthotungstate and Isostructural Compounds. United States: N. p., 2007. Web. doi:10.1209/0295-5075/77/56001.
Errandonea,D. Landau Theory Applied to Phase Transitions in Calcium Orthotungstate and Isostructural Compounds. United States. doi:10.1209/0295-5075/77/56001.
Errandonea,D. Mon . "Landau Theory Applied to Phase Transitions in Calcium Orthotungstate and Isostructural Compounds". United States. doi:10.1209/0295-5075/77/56001.
@article{osti_959672,
title = {Landau Theory Applied to Phase Transitions in Calcium Orthotungstate and Isostructural Compounds},
author = {Errandonea,D.},
abstractNote = {The pressure-driven tetragonal-to-monoclinic phase transition in CaWO4 and related scheelite-structured orthotungstates is analysed in terms of spontaneous strains. Based upon our previous high-pressure X-ray diffraction results and the Landau theory, it is suggested that the scheelite-to-fergusonite transition is of second order in nature.},
doi = {10.1209/0295-5075/77/56001},
journal = {Europhysics Letters},
number = ,
volume = 77,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}