Development of ferromagnetic oxide semiconductor thin films towards spintronics applications

K. Fujita, H. Hojo, T. Matoba, K. Hirao, K. Tanaka

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

Epitaxial thin films of ilmenite-hematite solid solutions with compositions of xFeTiO3-(l - x)Fe2O3 (x=0.8, 0.7, and 0.6) (in molar ratio) have been grown on α-Al2O3 (0001) substrates utilizing a pulsed laser deposition (PLD) technique, and their electrical and magnetic properties have been examined. By precisely controlling the deposition conditions such as oxygen partial pressure and substrate temperature, a single phase of well-ordered solid solutions can be obtained irrespective of the compositions. The ordered-phase thin films show ferrimagnetic properties, and the Curie temperature (Tc) is 270, 400, and over 400 K at the compositions of x=0.S, 0.7, and 0.6, respectively. The ordered-phase thin films are also semiconducting, while the conduction type changes from p- to n-types as x is decreased from 0.8 to 0.6. The Hall effect measurements at room temperature suggest the spin polarization of charged carriers.

元の言語英語
ホスト出版物のタイトルMaterials Science and Technology Conference and Exhibition MS and T'08
ページ134-143
ページ数10
出版物ステータス出版済み - 12 1 2008
外部発表Yes
イベントMaterials Science and Technology Conference and Exhibition, MS and T'08 - Pittsburgh, PA, 米国
継続期間: 10 5 200810 9 2008

出版物シリーズ

名前Materials Science and Technology Conference and Exhibition, MS and T'08
1

その他

その他Materials Science and Technology Conference and Exhibition, MS and T'08
米国
Pittsburgh, PA
期間10/5/0810/9/08

Fingerprint

Magnetoelectronics
Thin films
Solid solutions
Chemical analysis
Ilmenite
Spin polarization
Epitaxial films
Hematite
Hall effect
Substrates
Pulsed laser deposition
Curie temperature
Partial pressure
Magnetic properties
Electric properties
Oxygen
Temperature
Oxide semiconductors

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials

これを引用

Fujita, K., Hojo, H., Matoba, T., Hirao, K., & Tanaka, K. (2008). Development of ferromagnetic oxide semiconductor thin films towards spintronics applications. : Materials Science and Technology Conference and Exhibition MS and T'08 (pp. 134-143). (Materials Science and Technology Conference and Exhibition, MS and T'08; 巻数 1).

Development of ferromagnetic oxide semiconductor thin films towards spintronics applications. / Fujita, K.; Hojo, H.; Matoba, T.; Hirao, K.; Tanaka, K.

Materials Science and Technology Conference and Exhibition MS and T'08. 2008. p. 134-143 (Materials Science and Technology Conference and Exhibition, MS and T'08; 巻 1).

研究成果: 著書/レポートタイプへの貢献会議での発言

Fujita, K, Hojo, H, Matoba, T, Hirao, K & Tanaka, K 2008, Development of ferromagnetic oxide semiconductor thin films towards spintronics applications. : Materials Science and Technology Conference and Exhibition MS and T'08. Materials Science and Technology Conference and Exhibition, MS and T'08, 巻. 1, pp. 134-143, Materials Science and Technology Conference and Exhibition, MS and T'08, Pittsburgh, PA, 米国, 10/5/08.
Fujita K, Hojo H, Matoba T, Hirao K, Tanaka K. Development of ferromagnetic oxide semiconductor thin films towards spintronics applications. : Materials Science and Technology Conference and Exhibition MS and T'08. 2008. p. 134-143. (Materials Science and Technology Conference and Exhibition, MS and T'08).
Fujita, K. ; Hojo, H. ; Matoba, T. ; Hirao, K. ; Tanaka, K. / Development of ferromagnetic oxide semiconductor thin films towards spintronics applications. Materials Science and Technology Conference and Exhibition MS and T'08. 2008. pp. 134-143 (Materials Science and Technology Conference and Exhibition, MS and T'08).
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