Angular dependence of magnetization reversal in epitaxial chromium telluride thin films with perpendicular magnetic anisotropy

Tanmoy Pramanik, Anupam Roy, Rik Dey, Amritesh Rai, Samaresh Guchhait, Hema C.P. Movva, Cheng Chih Hsieh, Sanjay K. Banerjee

    Research output: Contribution to journalArticle

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    Abstract

    We investigate magnetic anisotropy and magnetization reversal mechanism in chromium telluride thin films grown by molecular beam epitaxy. We report existence of strong perpendicular magnetic anisotropy in these thin films, along with a relatively strong second order anisotropy contribution. The angular variation of the switching field observed from the magnetoresistance measurement is explained quantitatively using a one-dimensional defect model. The model reveals the relative roles of nucleation and pinning in the magnetization reversal, depending on the applied field orientation. Micromagnetic simulations are performed to visualize the domain structure and switching process.

    LanguageEnglish (US)
    Pages72-77
    Number of pages6
    JournalJournal of Magnetism and Magnetic Materials
    Volume437
    DOIs
    StatePublished - Sep 1 2017

    Fingerprint

    Magnetization reversal
    tellurides
    Magnetic anisotropy
    Chromium
    chromium
    Thin films
    magnetization
    anisotropy
    Magnetoresistance
    thin films
    Molecular beam epitaxy
    Anisotropy
    Nucleation
    Defects
    molecular beam epitaxy
    nucleation
    defects
    simulation

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Angular dependence of magnetization reversal in epitaxial chromium telluride thin films with perpendicular magnetic anisotropy. / Pramanik, Tanmoy; Roy, Anupam; Dey, Rik; Rai, Amritesh; Guchhait, Samaresh; Movva, Hema C.P.; Hsieh, Cheng Chih; Banerjee, Sanjay K.

    In: Journal of Magnetism and Magnetic Materials, Vol. 437, 01.09.2017, p. 72-77.

    Research output: Contribution to journalArticle

    Pramanik, Tanmoy ; Roy, Anupam ; Dey, Rik ; Rai, Amritesh ; Guchhait, Samaresh ; Movva, Hema C.P. ; Hsieh, Cheng Chih ; Banerjee, Sanjay K./ Angular dependence of magnetization reversal in epitaxial chromium telluride thin films with perpendicular magnetic anisotropy. In: Journal of Magnetism and Magnetic Materials. 2017 ; Vol. 437. pp. 72-77
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    AU - Roy,Anupam

    AU - Dey,Rik

    AU - Rai,Amritesh

    AU - Guchhait,Samaresh

    AU - Movva,Hema C.P.

    AU - Hsieh,Cheng Chih

    AU - Banerjee,Sanjay K.

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    AB - We investigate magnetic anisotropy and magnetization reversal mechanism in chromium telluride thin films grown by molecular beam epitaxy. We report existence of strong perpendicular magnetic anisotropy in these thin films, along with a relatively strong second order anisotropy contribution. The angular variation of the switching field observed from the magnetoresistance measurement is explained quantitatively using a one-dimensional defect model. The model reveals the relative roles of nucleation and pinning in the magnetization reversal, depending on the applied field orientation. Micromagnetic simulations are performed to visualize the domain structure and switching process.

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