Enhancement of magneto-optical properties of anatase Co:TiO2 Co-doped with Nb

被引：6
作者：
Kinoda, Go
Hitosugi, Taro [1 ]
Yamamoto, Yukio
Furubayashi, Yutaka
Inaba, Kazuhisa
Hirose, Yasushi
Shimada, Toshihiro
Hasegawa, Tetsuya
机构：
[1] KAST, Kawasaki, Kanagawa 2130012, Japan
[2] Univ Tokyo, Dept Chem, Tokyo 1130033, Japan
[3] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2006年 / 45卷 / 12-16期
关键词：
TiO2; ferromagnetism; diluted magnetic semiconductor; DMS; epitaxial; thin film; Co-doping; pulsed laser deposition; PLD;
D O I：
10.1143/JJAP.45.L387
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have fabricated Ti0.95-xNbxCo0.05O2 thin films by the pulsed laser deposition technique. Carrier density was found to be almost identical to the Nb concentration up to x = 0.06, indicating that doped Nb atoms generate carriers with > 80% efficiency. In this doping range, magneto-optical properties were significantly enhanced by Nb-doping. The remanent Faraday rotation at a wavelength of 405 nm was as high as 5.6 x 10(3) deg/cm, which is approximately one order of magnitude higher than that of a film free of Nb-doping. The present results support the hypothesis that conduction electrons play an essential role in the ferromagnetism of Co-doped TiO2.
引用
收藏
页码：L387 / L389
页数：3
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