In situ high-pressure synchrotron X-ray diffraction study of the structural stability in NdVO4 and LaVO4

Errandonea, D.; Popescu, C.; Achary, S.N.; Tyagi, A.K.; Bettinelli, M.

doi:10.1016/j.materresbull.2013.10.047

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Room-temperature angle-dispersive X-ray diffraction measurements on zircon-type NdVO4 and monazite-type LaVO4 were performed in a diamond-anvil cell up to 12 GPa. In NdVO4, we found evidence for a non-reversible pressure-induced structural phase transition from zircon to a monazite-type structure at 6.5 GPa. Monazite-type LaVO4 also exhibits a phase transition but at 8.6 GPa. In this case the transition is reversible and isomorphic. In both compounds the pressure induced transitions involve a large volume collapse. Finally, the equations of state and axial compressibilities for the low-pressure phases are also determined.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11562/667560

Titolo:	In situ high-pressure synchrotron X-ray diffraction study of the structural stability in NdVO4 and LaVO4
Autori interni:	BETTINELLI, Marco Giovanni
Data di pubblicazione:	2014
Rivista:	MATERIALS RESEARCH BULLETIN
Abstract:	Room-temperature angle-dispersive X-ray diffraction measurements on zircon-type NdVO4 and monazite-type LaVO4 were performed in a diamond-anvil cell up to 12 GPa. In NdVO4, we found evidence for a non-reversible pressure-induced structural phase transition from zircon to a monazite-type structure at 6.5 GPa. Monazite-type LaVO4 also exhibits a phase transition but at 8.6 GPa. In this case the transition is reversible and isomorphic. In both compounds the pressure induced transitions involve a large volume collapse. Finally, the equations of state and axial compressibilities for the low-pressure phases are also determined.
Handle:	http://hdl.handle.net/11562/667560
Appare nelle tipologie:	01.01 Articolo in Rivista

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