Pressure-induced structural transition in UGa2 |
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| Authors: | N. R. Sanjay Kumar N. Subramanian N. V. Chandra Shekar M. Sekar P. Ch. Sahu |
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| Affiliation: | N. R. Sanjay Kumar *,N. Subramanian,N. V. Chandra Shekar,M. Sekar,P. Ch. Sahu |
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| Abstract: | High-pressure X-ray diffraction has been performed on UGa2 up to 20?GPa using a diamond anvil cell. UGa2 exhibits the AlB2-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 AlB2-type phase has been determined to be ～100?GPa, which is comparable to rare earth digallides like TmGa2 and HoGa2. |
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