Structural evolution of double perovskite Sr2MgWO6 under high pressure

Autor:	Himanshu K. Poswal, Surinder M. Sharma, Adish Tyagi, S. N. Acharya, Ajay Kumar Mishra
Rok vydání:	2010
Předmět:	Diffraction Bulk modulus Chemistry Analytical chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Tetragonal crystal system symbols.namesake Crystallography High pressure Phase (matter) symbols Raman spectroscopy Raman scattering Monoclinic crystal system
Zdroj:	physica status solidi (b). 247:1773-1777
ISSN:	1521-3951 0370-1972
Popis:	Angle dispersive X-ray diffraction and Raman scattering studies have been carried out on Sr 2 MgWO 6 up to ∼28 and ∼40 GPa, respectively. This compound is found to be structurally stable up to the highest pressure in this study. Bulk modulus of ambient phase is determined to be 128 ± 3.9 GPa which is in close agreement with the theoretical value of bulk modulus, 132 GPa, obtained using first principles calculations. Our first principles calculations also show that the initial tetragonal phase is more stable compared to the expected monoclinic structure up to at least 100 GPa.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e0cb6ef49a630b778ab93dd55151bbf8 https://doi.org/10.1002/pssb.201046030 Zobrazit plný text záznamu Plný text