Zircon-monoclinic-scheelite transformation in nanocrystalline chromates

Mishra, A. K. ; Garg, Nandini ; Pandey, K. K. ; Shanavas, K. V. ; Tyagi, A. K. ; Sharma, Surinder M. (2010) Zircon-monoclinic-scheelite transformation in nanocrystalline chromates Physical Review B: Condensed Matter and Materials Physics, 81 (10). 104109_1-104109_6. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v81/i10/e104109

Related URL: http://dx.doi.org/10.1103/PhysRevB.81.104109

Abstract

Our in-situ high-pressure X-ray diffraction measurements on zircon structured nanocrystalline chromates show that the structural phase transformation from zircon to scheelite phase proceeds via an intermediate monoclinic phase, i.e., zircon→monoclinic→scheelite. Though there have been speculations about zircon-scheelite phase transformation proceeding through an unstable transient monoclinic phase in ZrSiO4, we have experimentally demonstrated the existence of a similar intermediate stable state in a zircon structured compound. For our nanocrystalline samples, the transformation pressure is found to be higher than the bulk.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:48191
Deposited On:14 Jul 2011 08:33
Last Modified:14 Jul 2011 08:33

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