Epitaxial growth of room-temperature ferrimagnetic semiconductor thin films based on the ilmenite-hematite solid solution

Hajime Hojo, Koji Fujita, Katsuhisa Tanaka, Kazuyuki Hirao

研究成果: ジャーナルへの寄稿学術誌査読

29 被引用数 (Scopus)

抄録

Epitaxial thin films composed of O.7FeTiO3·0.3Fe 2O3 solid solution have been prepared on α-Al 2O3 (0001) substrates by a pulsed laser deposition method, and their electrical and magnetic properties have been examined. A single phase of the ordered phase can be obtained under limited deposition conditions: oxygen partial pressure of 1.0×10-3Pa and substrate temperature of 600-700°C. The as-deposited film is semiconducting and ferrimagnetic below room temperature, while subsequent annealing in vacuum leads to the Curie temperature above room temperature. On the other hand, the thin films with the disordered phase appear to be antiferromagnetic and also insulating.

本文言語英語
論文番号082509
ジャーナルApplied Physics Letters
89
8
DOI
出版ステータス出版済み - 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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