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Anisotropic magnetoresistance in polycrystalline La sub(0.67)(Ca sub(1-x)Sr sub(x)) sub(0.33)MnO sub(3)

Journal of physics. D, Applied physics, 2012-06, Vol.45 (24), p.245001-1-5 [Peer Reviewed Journal]

ISSN: 0022-3727 ;EISSN: 1361-6463 ;DOI: 10.1088/0022-3727/45/24/245001

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  • Title:
    Anisotropic magnetoresistance in polycrystalline La sub(0.67)(Ca sub(1-x)Sr sub(x)) sub(0.33)MnO sub(3)
  • Author: Liu, Y ; Yang, Z ; Yang, H ; Zou, T ; Xie, Y ; Chen, B ; Sun, Y ; Zhan, Q ; Li, R-W
  • Subjects: Anisotropy
  • Is Part Of: Journal of physics. D, Applied physics, 2012-06, Vol.45 (24), p.245001-1-5
  • Description: We investigated the anisotropic magnetoresistance (AMR) effects in polycrystalline La sub(0.67)(Ca sub(1-x)Sr sub(x)) sub(0.33)MnO sub(3). An anomalously large AMR of 19.1% was observed near the metal-insulator transition temperature (T sub(MI)) in polycrystalline La sub(0.67)Ca sub(0.33)MnO sub(3), but slight Sr doping could significantly depress the anomalous AMR around T sub(MI). By studying the temperature, magnetic field, current direction dependence of AMR and the phase transition process, it was suggested that the anisotropic spin-polarized transport and the demagnetization effect together with the metamagnetic transition around T sub(MI) play important roles in the anomalous AMR effects in polycrystalline perovskite manganites.
  • Language: English
  • Identifier: ISSN: 0022-3727
    EISSN: 1361-6463
    DOI: 10.1088/0022-3727/45/24/245001
  • Source: Alma/SFX Local Collection
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