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Phase diagram of calcium at high pressure and high temperature

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.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 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

Autores/as

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

WILSON, C. W.