Garg, Nandini ; Pandey, K. K. ; Murli, Chitra ; Shanavas, K. V. ; Mandal, Balaji P. ; Tyagi, A. K. ; Sharma, Surinder M. (2008) Decomposition of lanthanum hafnate at high pressures Physical Review B: Condensed Matter and Materials Physics, 77 (21). 214105_1-214105_8. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v77/i21/e214105
Related URL: http://dx.doi.org/10.1103/PhysRevB.77.214105
Abstract
Our high pressure X-ray diffraction and Raman scattering studies on lanthanum hafnate (La2Hf2O7) establish that it decomposes into its constituent oxides beyond ~18 GPa. These results are supported by our first-principles total energy calculations. Raman scattering results also imply that the products of dissociation are in an amorphouslike state beyond 50 GPa but crystallize slowly upon release of pressure.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 48165 |
| Deposited On: | 14 Jul 2011 08:30 |
| Last Modified: | 14 Jul 2011 08:30 |
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