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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.


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
Source: Journal of Physics and Chemistry of Solids
DOI: 10.1016/S0022-3697(02)00194-4


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