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Crystal stability and pressure‐induced phase transitions in scheelite AWO 4 (A = Ca, Sr, Ba, Pb, Eu) binary oxides. II: Towards a systematic understanding
Author(s) -
Manjón F. J.,
Errandonea D.,
LópezSolano J.,
RodríguezHernández P.,
Radescu S.,
Mujica A.,
Muñoz A.,
Garro N.,
PellicerPorres J.,
Segura A.,
FerrerRoca Ch.,
Kumar R. S.,
Tschauner O.,
Aquilanti G.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200672588
Subject(s) - scheelite , phase diagram , abx test , wolframite , phase (matter) , crystallography , high pressure , chemistry , thermodynamics , materials science , mineralogy , tungsten , physics , metallurgy , statistics , mathematics , organic chemistry
Recent experimental measurements and ab initio calculations in scheelite CaWO 4 , SrWO 4 , BaWO 4 , PbWO 4 , EuWO 4 and YLiF 4 crystals reveal the existence of complex high‐pressure phase diagrams, which present striking differences but also relevant similarities. In this work we show that the high‐pressure structural sequence in the studied scheelites can be understood on the basis of the positions of the different ABX 4 compounds in Fukunaga and Yamaoka's diagram and in Bastide's diagram. Our study can help to understand the phase diagrams and high‐pressure phase transitions occurring in ABX 4 compounds with scheelite, wolframite, fergusonite, zircon, or pseudoscheelite structures. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)