Domain nucleation in hard/soft ferromagnetic bilayers with exchange coupling through a pinhole

E. Saitoh, T. Nakamura, H. Matsumoto, H. Miyajima

研究成果: Article査読

抄録

The magnetization process has been investigated for SmCo5/SiO2/Fe19Ni81 trilayer films, in which the exchange coupling between the hard-ferromagnetic SmCo5 layer and the soft-ferromagnetic Fe19Ni81 layer is controlled by the dimension of a small pinhole (10–100 μm in diameter) penetrating the SiO2 layer. The magnetization curves and magnetic torque curves indicate that the magnetization reversal in the SmCo5 layer consists of a nucleation around the pinhole and the propagation of the domain wall. This is responsible for the suppression of the coercivity induced by the coupling through the pinhole.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
68
1
DOI
出版ステータスPublished - 2003 1 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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