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CuMo0.9W0.1O4 phase transition with thermochromic, piezochromic, and thermosalient effects

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorROBERTSON, Lionel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPENIN, Nicolas
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBLANCO-GUTIERREZ, Veronica
hal.structure.identifierLaboratory for Neutron Scattering and Imaging [Paul Scherrer Institute] [LNS]
dc.contributor.authorDENIS, Sheptyakov
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMOURGUES, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGAUDON, Manuel
dc.date.issued2015
dc.identifier.issn2050-7526
dc.description.abstractEnAMoO4 compounds (A = Co, Mn, Fe, Ni, Cu, or Zn) exhibit a first-order phase transition associated with piezochromic and thermochromic phenomena, as demonstrated in previous studies. In this study, neutron diffraction patterns were collected for CuMo0.9W0.1O4 samples across the hysteresis cycle to accurately characterize the structural evolution (i.e., cell parameters and atomic positions) versus temperature. This study provides information regarding the phase-transition origin. In accordance with the Birch–Murnaghan model, the phase transition is due to the higher compressibility coefficient, despite the presence of the shorter bonds for the high-temperature form. The cell-volume difference of 13% between the high and low temperature forms leads to additional exotic properties: the thermosalient effect (“jumping crystals”) associated with a certain crystallite fracture (along the −101 plane) is shown.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enCuMo0.9W0.1O4 phase transition with thermochromic, piezochromic, and thermosalient effects
dc.typeArticle de revue
dc.identifier.doi10.1039/C4TC02463J
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Materials Chemistry C
bordeaux.page2918-2924
bordeaux.volume3
bordeaux.issue12
bordeaux.peerReviewedoui
hal.identifierhal-01140337
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01140337v1
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