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Pressure-induced structural transition in UGa2.

Authors :
Sanjay Kumar *, N. R.
Subramanian, N.
Chandra Shekar, N. V.
Sekar, M.
Sahu, P. Ch.
Source :
Philosophical Magazine Letters; Dec2004, Vol. 84 Issue 12, p791-795, 5p
Publication Year :
2004

Abstract

High-pressure X-ray diffraction has been performed on UGa<subscript>2</subscript> up to 20 GPa using a diamond anvil cell. UGa<subscript>2</subscript> exhibits the AlB<subscript>2</subscript>-type structure with space group P6/mmm at room temperature and atmospheric pressure. At about 16 GPa a reversible structural transformation to a tetragonal phase was observed. The bulk modulus of the AlB<subscript>2</subscript>-type phase has been determined to be ∼100 GPa, which is comparable to rare earth digallides like TmGa<subscript>2</subscript> and HoGa<subscript>2</subscript>. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09500839
Volume :
84
Issue :
12
Database :
Complementary Index
Journal :
Philosophical Magazine Letters
Publication Type :
Academic Journal
Accession number :
17550847
Full Text :
https://doi.org/10.1080/09500830500071259