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

页码：L387 / L389

页数：3

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