Poswal, H. K. ; Tyagi, A. K. ; Lausi, Andrea ; Deb, S. K. ; Sharma, Surinder M. (2009) Structural phase transitions in Zn(CN)2 under high pressures Journal of Solid State Chemistry, 182 (1). pp. 136-140. 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.2008.09.026
Abstract
High pressure behavior of zinc cyanide (Zn(CN)2) has been investigated with the help of synchrotron-based X-ray diffraction measurements. Our studies reveal that under pressure this compound undergoes phase transformations and the structures of the new phases depend on whether the pressure is hydrostatic or not. Under hydrostatic conditions, Zn(CN)2 transforms from cubic to orthorhombic to cubic-II to amorphous phases. In contrast, the non-hydrostatic pressure conditions drive the ambient cubic phase to a partially disordered crystalline phase, which eventually evolves to a substantially disordered phase. The final disordered phase in the latter case is distinct from the amorphous phase observed under the hydrostatic pressures.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | High Pressure; X-ray Diffraction; Structural Phase Transition; Negative Thermal Expansion |
| ID Code: | 48194 |
| Deposited On: | 14 Jul 2011 08:33 |
| Last Modified: | 14 Jul 2011 08:33 |
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