Babu, Y. ; Sastry, M. D. ; Dasannacharya, Balebail Anantha ; Balakumar, S. ; Ilangovan, R. ; Ramasamy, P. ; Aggarwal, M. D. (1996) The tetragonal ↔ phase transition in mixed perovskite Ba1 -xCaxTiO3 single crystals: EPR evidence of impurity-induced dynamic effects Journal of Physics: Condensed Matter, 8 (42). pp. 7847-7856. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/8/42/004
Related URL: http://dx.doi.org/10.1088/0953-8984/8/42/004
Abstract
By using EPR of Fe3+ probe ions in Ba1-xCaxTiO3 (x = 0 and 0.05), clear evidence has been obtained for the existence of dynamic fluctuation between cubic and tetragonal phases in the vicinity of the phase transition temperature. This was manifested as a total absence of the EPR of Fe3+ in the temperature range 112-160°c for x = 0.05, clearly showing that there is a time-dependent interaction serving as an additional and more effective pathway of spin relaxation. The time scale of the fluctuation is estimated to be 6×10-11 s.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics Publishing. |
| ID Code: | 10149 |
| Deposited On: | 04 Nov 2010 07:03 |
| Last Modified: | 07 Feb 2011 04:10 |
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