High pressure Raman scattering study on the phase stability of LuVO{sub 4}

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.05.003· OSTI ID:21370497

Rao, Rekha ^[1]; Garg, Alka B; Sakuntala, T ^[1]; Achary, S N; Tyagi, A K ^[2]

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1. High Pressure Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India)
2. Chemistry Division, Bhabha Atomic Research Center, Mumbai 400085 (India)

High pressure Raman spectroscopic investigations have been carried out on rare earth orthovanadate LuVO{sub 4} upto 26 GPa. Changes in the Raman spectrum around 8 GPa across the reported zircon to scheelite transition are investigated in detail and compared with those observed in other vanadates. Co-existence of the zircon and scheelite phases is observed over a pressure range of about 8-13 GPa. The zircon to scheelite transition is irreversible upon pressure release. Subtle changes are observed in the Raman spectrum above 16 GPa which could be related to scheelite reversible fergusonite transition. Pressure dependencies of the Raman active modes in the zircon and the scheelite phases are reported. - Graphical abstract: Study of scheelite-fergusonite transition in RVO{sub 4} by Raman spectroscopy is rare. Here we report Raman spectroscopic investigations of LuVO{sub 4} at high pressure to obtain insight into nature of post-scheelite phases.

• OSTI ID: 21370497
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 7; Other Information: DOI: 10.1016/j.jssc.2009.05.003; PII: S0022-4596(09)00202-3; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LUTETIUM COMPOUNDS
PHASE STABILITY
PHASE TRANSFORMATIONS
PRESSURE RANGE GIGA PA
PRESSURE RELEASE
RAMAN EFFECT
RAMAN SPECTRA
RAMAN SPECTROSCOPY
VANADATES
ZIRCON
LASER SPECTROSCOPY
MINERALS
OXYGEN COMPOUNDS
PRESSURE RANGE
RARE EARTH COMPOUNDS
SILICATE MINERALS
SPECTRA
SPECTROSCOPY
STABILITY
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS