Heat capacity and p-T phase diagrams of the ordered perovskites Pb2MgWO6 and Pb2CoWO6

Authors
Flerov, IN Gorev, MV Sciau, P
Citation
In. Flerov et al., Heat capacity and p-T phase diagrams of the ordered perovskites Pb2MgWO6 and Pb2CoWO6, J PHYS-COND, 12(5), 2000, pp. 559-567
Citations number
25
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
12
Issue
5
Year of publication
2000
Pages
559 - 567
Database
ISI
SICI code
0953-8984(20000207)12:5<559:HCAPPD>2.0.ZU;2-Q
Abstract
The heat capacities of Pb2MgWO6 and Pb2CoWO6 and the effect of hydrostatic pressure on the phase transitions have been studied on powdered samples by means of an adiabatic calorimeter and DTA performed under pressure, respect ively. Thermodynamic parameters, such as change of total excess entropy, la tent hear and hysteresis of the phase transition temperature were determine d. Entropies and p-T phase diagrams are discussed in connection with struct ural data.