Structural transformations at high pressure in the refractory metals (Ta, Mo, V)

Autor:	Yu. Kh. Vekilov, I. Yu. Mosyagin, M. P. Belov, O. M. Krasilnikov, Nina Bondarenko, A. V. Lugovskoy
Rok vydání:	2014
Předmět:	Phase transition Materials science Condensed matter physics Phonon Mechanical Engineering Hydrostatic pressure Metals and Alloys Refractory metals Cubic crystal system Landau theory Mechanics of Materials Lattice (order) Materials Chemistry Density functional theory
Zdroj:	Journal of Alloys and Compounds. 586:S242-S245
ISSN:	0925-8388
Popis:	In the framework of the Landau theory, the elastic phase transitions under pressure in metals with a cubic lattice are considered. The model of such transitions is proposed. Conditions for the loss of stability of a cubic crystal under hydrostatic pressure are obtained. The effective elastic constants of second, third and forth orders and phonon dispersion of V, Mo and Ta in wide range of pressure were calculated by the density functional theory. The stability of bcc lattice and structural transformations in these metals are investigated on base of the obtained data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6728d890ef2c3d8cbe2927a2b9c01550 https://doi.org/10.1016/j.jallcom.2013.05.151 Zobrazit plný text záznamu Full Text from ScienceDirect