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

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

Research output: Contribution to journalArticle

Abstract

The magnetization process has been investigated for SmCo 5/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.

Original languageEnglish
Article number012409
Pages (from-to)124091-124094
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number1
Publication statusPublished - 2003 Jul

Fingerprint

Exchange coupling
pinholes
Magnetization
Nucleation
nucleation
Magnetization reversal
Domain walls
Coercive force
magnetization
Torque
curves
coercivity
domain wall
torque
retarding
propagation
samarium cobalt

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Domain nucleation in hard/soft ferromagnetic bilayers with exchange coupling through a pinhole. / Saitoh, E.; Nakamura, T.; Matsumoto, Hideo; Miyajima, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 1, 012409, 07.2003, p. 124091-124094.

Research output: Contribution to journalArticle

Saitoh, E, Nakamura, T, Matsumoto, H & Miyajima, H 2003, 'Domain nucleation in hard/soft ferromagnetic bilayers with exchange coupling through a pinhole', Physical Review B - Condensed Matter and Materials Physics, vol. 68, no. 1, 012409, pp. 124091-124094.
Saitoh, E. ; Nakamura, T. ; Matsumoto, Hideo ; Miyajima, H. / Domain nucleation in hard/soft ferromagnetic bilayers with exchange coupling through a pinhole. In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 68, No. 1. pp. 124091-124094.
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