Almeida-Thouless Line in BiFeO3: Is Bismuth Ferrite a mean field spin glass?

Manoj K. Singh; Ram S. Katiyar; W. Prellier; J. F. Scott

doi:10.1088/0953-8984/21/4/042202

Almeida-Thouless Line in BiFeO3: Is Bismuth Ferrite a mean field spin glass?

Materials Science 2008-12-15 v1

Authors: Manoj K. Singh , Ram S. Katiyar , W. Prellier , J. F. Scott

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Abstract

Low-temperature magnetic properties of epitaxial BiFeO3 thin films grown on (111)-SrTiO3 substrates have been studied. ZFC and FC magnetization curves show a large discrepency beginning at a characteristic temperature Tf that is dependent on the magnetic-field strengh. Tf(H) varies according to the well known de Aleimda-Thouless line (varies in Hexp(2/3)) suggesting an acentric long rnage spin-glass behavior and mean field system.

Keywords

Almeida-Thouless line BiFeO3 spin glass mean field system epitaxial thin films

Cite

@article{arxiv.0811.2347,
  title  = {Almeida-Thouless Line in BiFeO3: Is Bismuth Ferrite a mean field spin glass?},
  author = {Manoj K. Singh and Ram S. Katiyar and W. Prellier and J. F. Scott},
  journal= {arXiv preprint arXiv:0811.2347},
  year   = {2008}
}

Comments

Submitted to J. Phys. Cond. Matter

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