Coercivity of a percolative magnetic system


Abstract:

A model that describes the behavior of the coercivity Hc, of coalescing Ni films, as a percolation phenomenon is presented. We show that there is a nonmonotonic dependence, of the coercive field as a function of the occupation probability p. This behavior is a function of cluster size and topology, and is independent of the growth direction of the thin film. Based on these ideas we predict theoretically, and confirm experimentally, the dependence of Hc as a function of external magnetic field orientation. For a [111] oriented fcc film, if p is less than the percolation threshold Pcr, a sixfold symmetry is observed. However, if p ≈ Pcr the percolation is isotropic.

Año de publicación:

2001

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Campo magnético
    • Magnetismo
    • Ciencia de materiales

    Áreas temáticas de Dewey:

    • Magnetismo
    • Ingeniería y operaciones afines
    • Física aplicada
    Procesado con IAProcesado con IA

    Objetivos de Desarrollo Sostenible:

    • ODS 9: Industria, innovación e infraestructura
    • ODS 12: Producción y consumo responsables
    • ODS 8: Trabajo decente y crecimiento económico
    Procesado con IAProcesado con IA