Anomalous Hall Effect and Magnetoresistance of SrFe_<1-x>Co_xO_<3-δ>
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概要
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Transport and magnetic studies on polycrystalline samples of SrFe_<1-x>Co_xO_<3-δ> have been carried out to investigate the relationship between the magnetic structure and the anomalous Hall resistivity ρ_H. The hysteretic behavior of the magnetizalion observed in the measurements with varying temperature T up and then clown after zero field cooling indicates that the system has the reentrant spin-glass phase, which is supported by the increasing width of the magnetic reflections observed by neutron diffraction with decreasing T below the Curie temperature T_c. Detailed analyses of the observed Hall resistivity ρ_H indicate that the anomalous Hall coefficient exhibits unusual behavior in the reentrant spin-glass phase. The magnetic field (H)- and T-dependence of the magnetoresistance of the present system can be understood by a spin dependent tunneling model.
- 社団法人日本物理学会の論文
- 2003-02-15
著者
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YASUI Yukio
Department of Physics, Division of Material Science, Nagoya University
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IDO Takahiko
Department of Physics, Division of Material Science, Nagoya University
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Sato Masatoshi
Department Of Electrical And Electronics Engineering Sophia University
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Ido Takahiko
Department Of Physics Division Of Material Science Nagoya University
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Sato Masatoshi
Department Of Agro-environmental Science Obihiro University Of Agriculture And Veterinary Medicine
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Yasui Yukio
Department Of Physics Division Of Material Science Nagoya University
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