Large magneto-optical effect in an oxide diluted magnetic semiconductor Zn1-xCoxO

被引：180

作者：

Ando, K ^{[1
]}

Saito, H

Jin, ZW

Fukumura, T

Kawasaki, M

Matsumoto, Y

Koinuma, H

机构：

[1] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

[2] Tokyo Inst Technol, Dept Innovat & Engineered Mat, Yokohama, Kanagawa 2268502, Japan

[3] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[4] Tokyo Inst Technol, Frontier Collaborat Res Ctr, Yokohama, Kanagawa 2268503, Japan

[5] COMET, Tsukuba, Ibaraki 3050044, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 18期

关键词：

D O I：

10.1063/1.1368375

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Strong magneto-optical effect of Zn1-xCoxO near the optical band gap is reported. Magnetic circular dichroism (MCD) and Faraday rotation of Zn1-xCoxO (x=0.012 and 0.016) at 5 K are as high as 2 degrees /cm Oe at 3.4 eV, which are about two orders larger than those of ZnO. Absence of strong Co2+ d-d(*) transition near the optical band gap makes Zn1-xCoxO an useful material for short-wavelength magneto-optical applications. Large magneto-optical effects and paramagnetic temperature dependence of MCD show a strong mixing of the sp bands of the host ZnO with Co2+ d orbitals. The polarity of the MCD peak is negative indicating the antiferromagnetic p-d exchange interaction. (C) 2001 American Institute of Physics.

引用

页码：2700 / 2702

页数：3

共 23 条

[1] OPTICAL STUDY OF MN-2+ INTRAIONIC TRANSITIONS IN ZINCBLENDE MNTE [J].