Rao, C. N. R. ; Rama Rao, G. ; Subba Rao, G. V. (1973) Semiconductor-metal transitions in NbO2 and Nb1−xVxO2 Journal of Solid State Chemistry, 6 (3). pp. 340-343. ISSN 0022-4596
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002245...
Related URL: http://dx.doi.org/10.1016/0022-4596(73)90219-3
Abstract
NbO2, Nb0.98V0.02O2, and Nb0.95V0.05O2 transform from semiconducting to metallic state at temperatures higher than the DTA phase-transition temperatures. Vibrational mode softening and c-axis Nb---Nb pairing appear to be important factors in the mechanism of these transitions. In the solid solutions, c/a ratio is maximum at x=0.5 since the metal-metal interaction along the c axis becomes minimum; conductivity is minimum at this composition since there are no mobile electrons.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 41947 |
| Deposited On: | 31 May 2011 13:52 |
| Last Modified: | 31 May 2011 13:52 |
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