The Almeida–Thouless line in BiFeO3: is bismuth ferrite a mean field spin glass?

Singh, Manoj K. and Katiyar, Ram S. and Prellier, W. and Scott, J. F. (2008) The Almeida–Thouless line in BiFeO3: is bismuth ferrite a mean field spin glass? Journal of Physics: Condensed Matter, 21 (4). 042202. DOI https://doi.org/10.1088/0953-8984/21/4/042202

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Abstract

Low-temperature magnetic properties of epitaxial BiFeO3 (BFO) thin films grown on (111) SrTiO3 substrates have been studied. Zero-field-cooled and field-cooled magnetization curves show a large discrepancy beginning at a characteristic temperature Tf that is dependent on the magnetic field strength. Tf(H) varies according to the well known de Almeida-Thouless line T_{\mathrm {f}} \propto H^{2 / 3} suggesting an acentric long-range spin-glass behavior and mean field system.

Item Type:	Article
Uncontrolled Keywords:	08AREP; IA57;
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Journal of Physics: Condensed Matter
Volume:	21
Page Range:	042202
Identification Number:	https://doi.org/10.1088/0953-8984/21/4/042202
Depositing User:	Sarah Humbert
Date Deposited:	30 May 2009 12:02
Last Modified:	23 Jul 2013 09:55
URI:	http://eprints.esc.cam.ac.uk/id/eprint/1038

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