Surinder Sharma, M. ; Sankaran, Hema ; Sikka, S. K. ; Chidambaram, R. (1987) Two-strain mechanism of pressure-induced body-centered-tetragonal to hexagonal-close-packed transition in Hg and HgxCd1-x alloys Physical Review B: Condensed Matter and Materials Physics, 36 (14). pp. 7730-7732. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v36/i14/p7730_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.36.7730
Abstract
The body-centered-tetragonal (bct) phase of Cd1-xHgx (x>0.25) alloys is correlated by atomic displacements of the TA1[110]<11- 0> zone-boundary mode to the high-pressure hexagonal-close-packed (hcp) phase. We have evaluated the degree of softening of this mode by a frozen-phonon calculation. The electronic force was calculated using the linear muffin-tin-orbital scheme. It is found that the uniform strain required to make θ =120° is strongly coupled to the shuffling strain, supporting the recent theory of martensitic transformation by Lindgard and Mouritsen.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 86248 |
| Deposited On: | 08 Mar 2012 11:30 |
| Last Modified: | 12 Jul 2012 07:58 |
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