Andronenko, S.I., Rodionov, A.A., Fedorova, A.V. and Misra, Sushil K. (2013) Electron paramagnetic resonance study of (La0.33Sm0.67)0.67Sr0.33−xBaxMnO3 (x<0.1): Griffiths phase. Journal of Magnetism and Magnetic Materials, 326 . pp. 151-156. ISSN 03048853
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Official URL: http://dx.doi.org/10.1016/j.jmmm.2012.08.017
Abstract
Manganite compounds (La0.33Sm0.67)0.67Sr0.33-xBaxMnO3 with light Ba doping (x = 0.01, 0.03, 0.06, 0.09) have been investigated by EPR over the temperature range 110 – 450 K. It was found that the EPR linewidth behavior changed drastically in samples with these low Ba concentrations. For all the samples there was observed a transition from paramagnetic to ferromagnetic phase below the phase-transition temperature. EPR signals characteristic of Griffiths phase were observed in the samples with x = 0.03, 0.06, 0.09. The temperature dependence of the EPR linewidth in the paramagnetic phase was analyzed on the basis of variable-range-hoping model, which explained well the observed data.
| Divisions: | Concordia University > Faculty of Arts and Science > Physics |
|---|---|
| Item Type: | Article |
| Refereed: | Yes |
| Authors: | Andronenko, S.I. and Rodionov, A.A. and Fedorova, A.V. and Misra, Sushil K. |
| Journal or Publication: | Journal of Magnetism and Magnetic Materials |
| Date: | 2013 |
| Digital Object Identifier (DOI): | 10.1016/j.jmmm.2012.08.017 |
| ID Code: | 978145 |
| Deposited By: | DAVID MACAULAY |
| Deposited On: | 10 Jan 2014 19:21 |
| Last Modified: | 18 Jan 2018 17:46 |
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