Structural phase transition of TmGa 2 at high pressure
In: Journal of Alloys and Compounds, 1996
Online
academicJournal
Zugriff:
We have investigated the structural properties of the intermetallic compound TmGa2 under hydrostatic pressures up to 45 GPa by means of X-ray powder diffraction in diamond anvil cells. The orthorhombic low-pressure modification of the KHg2 (CeCu2) type undergoes a structural phase transition at 21(3) GPa into a high-pressure modification of the AlB2 structure type. TB-LMTO-ASA calculations and use of the electron localization function confirm that the structural change from a three-dimensional gallium network to a layered structure is associated with a transition from a tetrahedral homonuclear gallium network to a trigonal planar one.
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Structural phase transition of TmGa 2 at high pressure
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Autor/in / Beteiligte Person: | Schwarz, U. ; Bräuninger, S. ; Grin, Y. ; Syassen, K. |
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Zeitschrift: | Journal of Alloys and Compounds, 1996 |
Veröffentlichung: | 1996 |
Medientyp: | academicJournal |
DOI: | 10.1016/S0925-8388(96)02492-9 |
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