Anomalous magnetization processes and non-symmetrical domain wall displacements in L10 FePt particulate films

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

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Anomalous magnetization processes and non-symmetrical domain wall displacements in the minor loop of L10 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.

Original languageEnglish
Pages (from-to)14-19
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume303
Issue number1
DOIs
Publication statusPublished - 2006 Aug 1

Keywords

  • Anomalous magnetization processes
  • L1 FePt particulate film
  • Magnetic force microscopy
  • Non-symmetrical domain wall displacements

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Anomalous magnetization processes and non-symmetrical domain wall displacements in L1<sub>0</sub> FePt particulate films'. Together they form a unique fingerprint.

Cite this