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High pressure Raman spectroscopic study of spinel MgCr 2 O 4

Wang, Z; O'Neill, Hugh; Lazor, P; Saxena, S.K.

Description

An in situ Raman spectroscopic study was conducted to investigate the pressure induced phase transformation of MgCr2O4 spinel up to pressures of 76.4 GPa. Results indicate that MgCr2O4 spinel undergoes a phase transformation to the CaFe2O4 (or CaTi2O4) structure at 14.2 GPa, and this transition is complete at 30.1 GPa. The coexistence of two phases over a wide range of pressure implies a sluggish transition mechanism. No evidence was observed to support the pressure-induced dissociation of...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
URI: http://hdl.handle.net/1885/72893
Source: Journal of Physics and Chemistry of Solids
DOI: 10.1016/S0022-3697(02)00194-4

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