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Issue 3, 2011
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Spin-glass behavior of nanocrystalline multiferroic bismuth ferrite lead titanate

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Abstract

Multiferroic bismuth ferrite lead titanate exhibiting both ferroelectricity and ferromagnetism in a single perovskite phase has been chemically synthesized in the form of nanocrystalline films with large surface/interface to volume atomic ratio. The films show both electric polarization and magnetization hysteresis loops and demonstrate behavior consistent with the existence of a spin-glass state at temperatures well above the room temperature. Anomalous magnetic properties and glassy dynamics are associated with a high degree of magnetic frustration and disorder due to the spatial confinement in nanosized crystalline grains, random distribution of anisotropy axes in the grains, inter-grain interaction and the effects of uncompensated spins on the large effective surface and interface favored by the nanocrystalline morphology of the films.

Graphical abstract: Spin-glass behavior of nanocrystalline multiferroic bismuth ferrite lead titanate

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Publication details

The article was received on 14 Jul 2010, accepted on 27 Sep 2010 and first published on 04 Nov 2010


Article type: Paper
DOI: 10.1039/C0JM02273J
Citation: J. Mater. Chem., 2011,21, 781-788
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    Spin-glass behavior of nanocrystalline multiferroic bismuth ferrite lead titanate

    V. Tuboltsev, A. Savin, W. Sakamoto, A. Hieno, T. Yogo and J. Räisänen, J. Mater. Chem., 2011, 21, 781
    DOI: 10.1039/C0JM02273J

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