Jayaraman, A. ; Wang, S. Y. ; Sharma, S. K. (1995) Pressure-induced amorphization in NaLa (MoO4)2; a high pressure Raman and IR absorption study Solid State Communications, 93 (11). pp. 885-890. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0038-1098(94)00896-5
Abstract
The alkali-rare earth double molybdate NaLa(MoO4)2 crystallizing in the orthorhombic pseudo-scheelite structure has been investigated by high pressure Raman technique up to 30 GPa. A pressure-induced amorphization is found to occur near 27 GPa at room temperature, which reverses to the original crystalline phase readily on release of pressure. This behavior is compared with the pressure-induced amorphization in Tb2(MoO4)3. It is proposed that structural complexity and kinetically impeded phase transition play an important role in pressure-induced amorphizations. For the observed changes to the Raman peaks near 10 GPa a disordering of the Na and La cations resulting in a statistically scheelite type lattice is suggested.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Insulators; D. Phase Transitions; D. Phonons; E. Inelastic Light Scattering |
| ID Code: | 96104 |
| Deposited On: | 04 Dec 2012 09:15 |
| Last Modified: | 04 Dec 2012 09:15 |
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