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Abstract: Resistively heated diamond-anvil cells have been used together with synchrotron x-ray diffraction to investigate the phase diagram of calcium up to 50 GPa and 800 K. The phase boundaries between the Ca-I (fcc), Ca-II (bcc), and Ca-III (simple cubic, sc) phases have been determined at these pressure-temperature conditions, and the ambient temperature equation of state has been generated. The equation of state parameters at ambient temperature have been determined from the experimental compression curve of the observed phases by using third-order Birch-Murnaghan and Vinet equations. A thermal equation of state was also determined for Ca-I and Ca-II by combining the room-temperature Birch-Murnaghan equation of state with a Berman-type thermal expansion model.
Fuente: Phys. Rev. Materials 2, 083608 (2018)
Editorial: American Physical Society
Fecha de publicación: 30/08/2018
Nº de páginas: 8
Tipo de publicación: Artículo de Revista
DOI: 10.1103/PhysRevMaterials.2.083608
ISSN: 2475-9953,2476-0455
Proyecto español: MAT2016-75586-C4-1/4P : MAT2015-71070-REDC
Url de la publicación: https://doi.org/10.1103/PhysRevMaterials.2.083608
Leer publicación
ANZELLINI, S.
ERRANDONEA, DANIEL
MACLEOD, SIMON G.
BOTELLA VIVES, P.
DAISENBERGER, D.
DE'ATH, J. M.
GONZÁLEZ PLATAS, J.
IBAÑEZ, J.
MCMAHON, M. I.
MUNRO, K. A.
POPESCU, CATALIN
JAVIER RUIZ FUERTES
WILSON, C. W.
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