Journal
SOLID STATE COMMUNICATIONS
Volume 133, Issue 7, Pages 477-480Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2004.11.035
Keywords
yttriurn trihydride; phase transition; high pressure
Categories
Ask authors/readers for more resources
X-ray diffraction studies on bulk yttrium trihydride, in a diamond anvil cell, have been carried out up to 25 GPa. Pressure induced hexagonal-to-cubic phase transformation in YH3 has been found at pressure of about 8 GPa. The lattice parameter of the new cubic phase was determined as equal to 5.28 A. This finding confirms the theoretical predictions based on first principle calculations of such a transformation. Equations of state have been determined for both the hexagonal hcp and cubic fcc YH3 phases. As compared to the pure yttrium metal, bulk modulus for YH3 is about four times bigger. The similarity of this transition to that observed in the other 4-f trivalent hydrides has been discussed. (C) 2004 Elsevier Ltd. All rights reserved.
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