Strong room temperature magnetism in highly resistive strained thin films of BiFe0.5Mn0.5O3

Strong room temperature magnetism in highly resistive strained thin films of BiFe0.5Mn0.5O3

We report highly resistive strongly ferromagnetic strained thin (∼30 nm) films of BiFe0.5Mn0.5O3 (BFMO) grown on (001) SrTiO3 substrates using pulsed laser deposition. The films are tetragonal with high epitaxial quality and phase-purity. The magnetic moment and coercivity values at room temperature...

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Veröffentlicht in:Applied physics letters 2011-01, Vol.98 (1)
Hauptverfasser: Choi, E.-M., Patnaik, S., Weal, E., Sahonta, S.-L., Wang, H., Bi, Z., Xiong, J., Blamire, M. G., Jia, Q. X., MacManus-Driscoll, J. L.
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Sprache:eng
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Zusammenfassung:We report highly resistive strongly ferromagnetic strained thin (∼30 nm) films of BiFe0.5Mn0.5O3 (BFMO) grown on (001) SrTiO3 substrates using pulsed laser deposition. The films are tetragonal with high epitaxial quality and phase-purity. The magnetic moment and coercivity values at room temperature are 90 emu/cc (0.58μB/B-site ion) at H=3 kOe and 274 Oe, respectively. The magnetic transition temperature is strongly enhanced up to ∼600 K, which is ∼500 K higher than for pure bulk BiMnO3. Strained BFMO is a potential room temperature spin filter material for magnetic tunnel devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3540683