Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 31, Issue 23, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-648X/ab0dc2
Keywords
zircon; scheelite; x-ray diffraction; high pressure; equation of state; phase transition; orthovanadate
Categories
Funding
- Spanish Ministry of Science, Innovation and Universities [MAT2016-75586-C4-1-P, BES-2017-079651, RyC-2014-15643, FJCI-2016-27921]
- Generalitat Valenciana [Prome-teo/2018/123]
- Generalitat Valenciana
Ask authors/readers for more resources
Room temperature angle dispersive powder x-ray diffraction experiments on zircon-type NdVO4 were performed for the first time under quasi-hydrostatic conditions up to 24.5 GPa. The sample undergoes two phase transitions at 6.4 and 19.9 GPa. Our results show that the first transition is a zircon-to-scheelite-type phase transition, which has not been reported before, and contradicts previous non-hydrostatic experiments. In the second transition, NdVO4 transforms into a fergusonite-type structure, which is a monoclinic distortion of scheelite-type. The compressibility and axial anisotropy of the different polymorphs of NdVO4 are reported. A direct comparison of our results with former experimental and theoretical studies on other rare-earth orthovanadates found in literature highlights the importance of the role played by non-hydrostatic stresses in their high-pressure structural behavior.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available