Development of a method to identify in-plane anisotropy axes in soft magnetic materials using a standard vibrating sample magnetometer

Steven Bourn, Tim Mercer, Phil Bissell, Melvin Marian Vopson

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    Abstract

    A method of identifying in-plane anisotropy axes in soft magnetic materials has been developed using an in-field-only measurement technique. The method is based on an extended bi-axial Vibrating Sample Magnetometer (VSM) technique that simulates the torque on a sample; giving rise to equivalent torque curves that are comparable with those determined directly using a torque magnetometer. Testing of the new methodology was carried out on magnetically soft and multi-axial nickel ferrite textured films deposited with various crystal orientations. The results compare well with the accepted bi-axial VSM technique, identifying the same in-plane anisotropy directions and relative easy and hard axes from the in-field measurement alone. This means that these characteristics could be determined using a standard VSM measuring magnetization in the field direction as long as it is fitted with a rotating sample stage.
    Original languageEnglish
    Article number6000604
    JournalIEEE Transactions on Magnetics
    Volume51
    Issue number11
    Early online date5 Jun 2015
    DOIs
    Publication statusPublished - Nov 2015

    Keywords

    • In-Plane Anisotropy Axes Directions
    • Soft Magnetic Materials
    • Torque Magnetometry
    • Vibrating Sample Magnetometry

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