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Popa, K., Konings, R. J. M., Benes, O., Geisler, T. & Popa, A. F. (2006) Thermodynamic and spectroscopic studies on the phase transition of BaHf(PO4)(2). Thermochim. Acta, 451 1–4.
Added by: Florent Boucher (2016-05-12 13:21:36) |
| Type de référence: Article DOI: 10.1016/j.tca.2006.08.011 Numéro d'identification (ISBN etc.): 0040-6031 Clé BibTeX: Popa2006 Voir tous les détails bibliographiques  |
Catégories: CESES Mots-clés: barium hafnium phosphate, barium zirconium diorthophosphate, Ceramics, crystal-structure, dta, high-temperature heat capacity, monazite, phase transition, phosphates, Raman spectroscopy Créateurs: Benes, Geisler, Konings, Popa, Popa Collection: Thermochim. Acta |
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| Résumé |
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We have studied the thermal properties of BaHf(PO4)(2) during the heating from the room temperature up to 1600 K by thermal analysis and drop calorimetry and up to 835 K by Raman spectroscopy. A phase transition appears at about 791 K during heating and at 744 K during cooling. For the high-temperature polymorph we determined the crystal class and the most likely space groups based on Raman spectroscopic data. The enthalpy of the transition was derived from the high-temperature heat capacity measurements. (C) 2006 Elsevier B.V. All rights reserved.
Added by: Florent Boucher |