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Anomalous magnetization processes and non-symmetrical domain wall displacements in L10 FePt particulate films by Guoqing Li; Hitoshi Saito; Shunji Ishio; Toshiyuki Shima; Koki Takanashi is a Materials Science article available to read on EtoBox.

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Anomalous magnetization processes and non-symmetrical domain wall displacements in the minor loop of L1 0 FePt particulate films were investigated by magnetization measurements and in situ magnetic force microscopy. Magnetization (M) decreases dramatically on increasing the magnetic field to $3 kOe after which M becomes small and constant in the range of 5-20 kOe as observed in the successive measurement of minor loops. The domain wall displacement is non-symmetrical with respect to the field direction. The anomalous magnetization behavior was attributed to the non-symmetrical domain wall displacement and large magnetic field required for domain wall nucleation. Energy calculations from modeling suggest that non-symmetrical domain wall displacement is caused by the existence of metastable domains in which the domain edges are stuck to the particle boundaries.

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Author

Guoqing Li; Hitoshi Saito; Shunji Ishio; Toshiyuki Shima; Koki Takanashi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-8853)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)