Garg, Alka B. ; Verma, Ashok K. ; Vijayakumar, V. ; Rao, R. S. ; Godwal, B. K. (2005) High-pressure experimental and theoretical investigations on the fluorite structured compound AuAl2 Physical Review B, 72 (2). 024112_1-024112_5. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v72/i2/e024112
Related URL: http://dx.doi.org/10.1103/PhysRevB.72.024112
Abstract
Diamond anvil cell (DAC) based resistance measurements are carried out in AuAl2 to the pressures of about 25 GPa for the first time. The data indicate possibility of phase transition around 12 GPa. High pressure data obtained using Elettra synchrotron source confirm the transformation of AuAl2 from ambient CaF2 to orthorhombic phase. The high precision P-V data when transformed to universal equation of state does not show any deviation from linearity. The first principles electronic band structure calculations up to these pressures in the cubic phase do not reveal any change corroborating the experimental findings of nonobservation of electronic topological transition in this compound.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 11627 |
| Deposited On: | 13 Nov 2010 14:08 |
| Last Modified: | 02 Jun 2011 08:47 |
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