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Robertson, L. C., Gaudon, M., Jobic, S., Deniard, P. & Demourguess, A. (2011) Investigation of the First-Order Phase Transition in the Co1-xMgxMoO4 Solid Solution and Discussion of the Associated Thermochromic Behavior. Inorg. Chem. 50 2878–2884.
Added by: Laurent Cournède (2016-03-10 21:32:21) |
| Type de référence: Article DOI: 10.1021/ic102079f Numéro d'identification (ISBN etc.): 0020-1669 Clé BibTeX: Robertson2011 Voir tous les détails bibliographiques  |
Catégories: MIOPS Mots-clés: cumo1-xwxo4 series, cumoo4, dependence, electronic-properties, glasses, mixed-metal oxides, molybdates, nimoo4, system, transformations Créateurs: Demourguess, Deniard, Gaudon, Jobic, Robertson Collection: Inorg. Chem. |
Consultations : 1/531
Indice de consultation : 4% Indice de popularité : 1% |
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A series of compounds of Co1-xMgxMoO4 compositions has been prepared by a conventional ceramic route. The members of the whole solid solution exhibit a reversible first-order phase transition which was probed by using thermal expansion and low-temperature reflectivity techniques. Whereas the alpha -{>} beta transition temperature evolves linearly on warming from 435 to 200 degrees C with x going from 0 to 0.9, the beta -{>} alpha transition temperature variation falls,down on cooling from -40 degrees C to -140 degrees C going from CoMoO4 to Co0.1Mg0.9MoO4 with an asymptotic evolution. The phase transition temperatures have been explained on the basis of a crystal polarization effect under substitution of Mg for Co. Thus, from an applicative point of view, new thermochromic pigments with tunable transition temperatures are here proposed.
Added by: Laurent Cournède |