Document Detail


Structural investigation of LaAlO(3) up to 63 GPa.
MedLine Citation:
PMID:  21900739     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We report a high-pressure synchrotron x-ray diffraction on a LaAlO(3) single crystal. The transition from rhombohedral to cubic at 14.8 GPa is confirmed by the loss of the superstructure reflections, whose intensity shows a linear pressure dependence, characteristic of a second-order transition. The crystal remains cubic up to 63 GPa, the highest pressure reached, which provides a confirmation over a very large pressure range of the general rules for the evolution of distortions of perovskites under pressure. We report the parameters of the Birch-Murnaghan equations of state in the low- and high-pressure phases and discuss the evolution of the bulk modulus.
Authors:
Mael Guennou; Pierre Bouvier; Gaston Garbarino; Jens Kreisel
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-08
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  23     ISSN:  1361-648X     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  395401     Citation Subset:  -    
Affiliation:
Laboratoire des Matériaux et du Génie Physique, CNRS, Grenoble INP, MINATEC, 3 parvis Louis Néel, 38016 Grenoble, France.
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