Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/941| Title: | Semi-quantitative theory of the structures of simple ionic crystals |
| Authors: | Narayan, R. |
| Keywords: | Ionic crystals Crystal structures Repulsion potential van der Waals interactions |
| Issue Date: | Jul-1981 |
| Publisher: | Indian Academy of Sciences, Bangalore, India. |
| Citation: | Pramana, 1981, Vol. 17, p13-23. |
| Abstract: | A simple theory is developed which shows that the regions of stability of the CsCl, NaCl and ZnS structures can be demarcated in a two-dimensional plot of the radius ratio versus the strength of the van der Waals interaction. There is good agreement with experiment. The effect of pressure on these structures is explained qualitatively. The increased occurrence of the ZnS structure and the decreased stability of the CsCl structure in the A²¯ B²¯ crystals compared to the A+B¯ crystals is also explained. Finally it is shown that the radius ratio and the polarizabilities of the ions are the important factors that determine the structures of AB2 crystals. |
| URI: | http://hdl.handle.net/2289/941 |
| ISSN: | 0304-4289 |
| Copyright: | Indian Academy of Sciences, Bangalore, India. |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1981 Pramana V17 p13.pdf | 11p. | 469.68 kB | Adobe PDF | View/Open |
Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.