Almeida-Thouless Line in BiFeO3: Is Bismuth Ferrite a mean field spin glass?
classification
❄️ cond-mat.mtrl-sci
keywords
bifeo3fieldlinemeanvariesaccordingacentricaleimda-thouless
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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.
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