Study of Magnetization Behavior of Glass-Coated Amorphous Ferromagnetic Microwires

    Volume 2, Issue 1

    ISSN: 2165-3992

    CODEN: MPCOAD

    Published Online: 4 March 2013

    Page Count: 13


    Su, Fei
    School of Aeronautical Science and Engineering, Beijing Univ. of Aeronautics and Astronautics, Beijing,

    Wang, Xiaoyan
    School of Aeronautical Science and Engineering, Beijing Univ. of Aeronautics and Astronautics, Beijing,

    (Received 27 September 2012; accepted 31 January 2013)

    Abstract

    In this paper, two relevant problems are investigated. First, the residual stresses within glass-coated amorphous ferromagnetic microwires (AFMWs) subjected to thermal expansion mismatch and magnetostriction effect are analyzed using the finite element method; the effects of various design parameters (e.g., the thickness of the glass cover) on the residual stress are discussed as well. Then, based on the theory of micromagnetics, the magnetization states of AFMWs under the collective effects of stress and external axial magnetic field are analyzed. It has been found that the magnetization of AFMWs with negative saturation magnetostriction from −0.1 × 10−6 to −0.3 × 10−6 is sensitive to stress change, and external magnetic field of the proper amplitude can help to increase this sensitivity. This study should provide guidance on the optimal design of glass-coated AFMWs and their potential applications in tunable microwave composites and stress sensors.


    Paper ID: MPC20120035

    DOI: 10.1520/MPC20120035

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    Author
    Title Study of Magnetization Behavior of Glass-Coated Amorphous Ferromagnetic Microwires
    Symposium , 0000-00-00
    Committee G02