Effect of particle size on the magnetization process in lithographic arrays of Nd2Fe14B

Hitoshi Kubota, Takayuki Ikari, Yasuo Ando, Hiroaki Kato, Terunobu Miyazaki

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

Controlled arrays of Nd2Fe14B were fabricated via sputtering and lithography. The arrays were fabricated via optical and electron-beam lithography combined with dry etching technique. Designed particle size varies from 10 μmX10 μm to 0.5 μmX0.5 μm. We found an increase in the coercive field with decreasing particle size. Results of the micromagnetic calculations suggest that the coercive-field increase in smaller-sized particles is originated from the effective decrease in the exchange-coupling energy owing to the relative increase in the fraction of surface grain.

Original languageEnglish
Pages (from-to)6325-6327
Number of pages3
JournalJournal of Applied Physics
Volume87
Issue number9 III
DOIs
Publication statusPublished - 2000 May 1
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: 1999 Nov 151999 Nov 18

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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