Karmakar, S. ; Deb, S. K. ; Tyagi, A. K. ; Sharma, Surinder M. (2004) Pressure-induced amorphization in Y2(WO4)3: in situ X-ray diffraction and Raman studies Journal of Solid State Chemistry, 177 (11). pp. 4087-4092. ISSN 0022-4596
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.jssc.2004.08.020
Abstract
The high-pressure behavior of Y2(WO4)3 has been investigated at room temperature by in situ X-ray diffraction and Raman scattering measurements. Both the studies show that beyond ~3 GPa, this compound smoothly transforms from the ambient orthorhombic phase to a disordered phase. The structural modifications are found to be reversible up to ~4 GPa but become irreversible at higher pressures. Low pressures of transformation imply that these changes are intrinsic and not due to non-hydrostatic stresses. In addition, the correlation between the stability range of orthorhombic phase and counter cation size supports that this compound has a large field of negative thermal expansion in this family of compounds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | High Pressure; Y2(WO4)3; X-ray Diffraction; Raman Scattering |
| ID Code: | 48153 |
| Deposited On: | 13 Jul 2011 14:27 |
| Last Modified: | 13 Jul 2011 14:27 |
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