Magnetic relaxation in Barium ferrite films with perpendicular anisotropy

A. Lisfi, J.C. Lodder, P. de Haan, T. Bolhuis, F.J.G. Roesthuis

    Research output: Contribution to journalArticleAcademicpeer-review

    6 Citations (Scopus)

    Abstract

    Magnetic relaxation analysis have been carried out on barium ferrite films with perpendicular anisotropy, grown by pulsed laser deposition. Logarithmic behaviour on the time dependence of the magnetisation has been observed. The measured and corrected viscosity exhibit a large difference because of the contribution of the demagnetisation effect. At high fields, this difference is very much reduced because of the saturation which limits the susceptibility to very low values. Compared to the grain volume, the activation volume is small (Vac/Vgrain=0.1–0.2). This result can be explained by the incoherent rotation mode of the magnetisation reversal.
    Original languageEnglish
    Pages (from-to)258-261
    Number of pages4
    JournalJournal of magnetism and magnetic materials
    Volume193
    Issue number1-3
    DOIs
    Publication statusPublished - 1999

    Keywords

    • SMI-TST: From 2006 in EWI-TST
    • SMI-EXP: EXPERIMENTAL TECHNIQUES
    • TSTNE-Magnet-VSM: Vibrating Sample Magnetometer

    Fingerprint Dive into the research topics of 'Magnetic relaxation in Barium ferrite films with perpendicular anisotropy'. Together they form a unique fingerprint.

  • Cite this