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. ISSN 0953-8984

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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 Tf propto H2/3 suggesting an acentric long-range spin-glass behavior and mean field system.

Item Type: Article
InterNano Taxonomy: Nanoscale Objects and Nanostructured Materials > Nanocomposites > Thin films
Nanoscale Objects and Nanostructured Materials > Nanoparticles
Collections: Nanomanufacturing Research Collection
Depositing User: Rebecca Reznik-Zellen
Date Deposited: 20 Jan 2010 17:07
Last Modified: 22 Feb 2010 20:44
URI: http://eprints.internano.org/id/eprint/221

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