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Magnetic moment distributions in α- Fe nanowire array

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Abstract

α-Fe nanowire array has been electrodeposited into anodic aluminum oxide template. The magnetic moment distributions, in the interior and near the extremities of α-Fe nanowire with 60 nm in diameter, have been studied by means of transmission Mössbauer spectroscopy (MS), conversion electron Mössbauer spectroscopy (CEMS) and micromagnetic simulation. Transmission Mössbauer spectrum (MS) shows that the magnetic moments, inside the α-Fe nanowire array, are well parallel to nanowire, while conversion electron Mössbauer spectrum (CEMS) reveals that the magnetic moments, near the extremities of nanowire, diverge from the long axis of wire, and the average diverging angle calculated by the intensity ratio of the 2,5 peaks is about 24.0°. Moreover, the magnetic moment distributions of different depths to the top of wire are counted using micromagnetic simulation, which indicates that, the interior magnetic moments are strictly parallel to nanowire, and the closer the magnetic moment to the top of wire, the larger the diverging angle. Magnetic measurement shows that this α-Fe nanowire array represents a strong magnetic anisotropy.

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Authors and Affiliations

  1. Key Laboratory on Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, 730000, Lanzhou, China

    Fashen Li, Liyuan Ren, Zi** Niu, Haixin Wang & Tao Wang

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  1. Fashen Li
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  2. Liyuan Ren
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  3. Zi** Niu
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  4. Haixin Wang
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  5. Tao Wang
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Correspondence to Liyuan Ren.

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Li, F., Ren, L., Niu, Z. et al. Magnetic moment distributions in α- Fe nanowire array. Sc. China Ser. B-Chem. 46, 90–95 (2003). https://doi.org/10.1360/03yb9013

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  • DOI: https://doi.org/10.1360/03yb9013

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