Singh, M. K. and Katiyar, R. S. and Scott, J. F. (2008) New magnetic phase transitions in BiFeO3. Journal of Physics: Condensed Matter, 20 (25). p. 252203. DOI https://doi.org/10.1088/0953-8984/20/25/252203
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Official URL: http://www.iop.org/EJ/abstract/0953-8984/20/25/252...
Abstract
We observed Raman scattering from magnons in the frequency range from 10 to 65 cm[?]1 in BiFeO3 single crystals at cryogenic temperatures; the temperature dependence of the magnon frequency at 18.2 cm[?]1 approximates an S = 5/2 Brillouin function up to the temperature ([?]280 K) at which the magnon becomes overdamped. The diverging cross section and the frequency shift at [?]140 and [?]200 K implies a spin-reorientation transition as in orthoferrites.
Item Type: | Article |
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Uncontrolled Keywords: | 08AREP; IA57; |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Journal of Physics: Condensed Matter |
Volume: | 20 |
Page Range: | p. 252203 |
Identification Number: | https://doi.org/10.1088/0953-8984/20/25/252203 |
Depositing User: | Sarah Humbert |
Date Deposited: | 30 May 2009 11:44 |
Last Modified: | 23 Jul 2013 09:55 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/1046 |
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