Observation of magnetic domain structure in anatase (Ti,Co)O2 thin film at room temperature

Thantip S. Krasienapibal, Shun Inoue, Tomoteru Fukumura, Tetsuya Hasegawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Magnetic domain structures in anatase (Ti,Co)O2 (001) epitaxial thin films were observed at room temperature. Magnetic force microscopy in vacuum enabled to observe submicrometer-sized maze domain. Variation of magnetic domain structure as functions of carrier density and Co content was in accordance with that of macroscopic magnetization representing close relationship between the bulk magnetism and magnetic domain structure. With increasing carrier density and/or Co content, the magnetic domain became larger with larger magnetic force signal mostly, where the ferromagnetic transition at carrier density of ∼2 × 1019cm-3 was observed as an emergence of magnetic domain structure. Micromagnetic parameters were evaluated as functions of carrier density and Co content.

Original languageEnglish
Article number202402
JournalApplied Physics Letters
Volume106
Issue number20
DOIs
Publication statusPublished - 2015 May 18

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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