Magnetic and optical properties of Zn1-xMnxO thin films prepared by pulsed laser deposition

被引：27

作者：

Jeon, KA

Kim, JH

Shim, WY

Lee, WY

Jung, MH

Lee, SY

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seodaemoon Ku, Seoul 120749, South Korea

[2] Yonsei Univ, Dept Mat Sci Engn, Seoul 120749, South Korea

[3] Korea Basic Sci Inst, Taejon 305333, South Korea

来源：

JOURNAL OF CRYSTAL GROWTH | 2006年 / 287卷 / 01期

关键词：

physical vapor deposition processes; zinc compounds; magnetic materials;

D O I：

10.1016/j.jcrysgro.2005.10.044

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We report on ferromagnetic characteristics of Zn1-xMnxO thin films grown on Al2O3 substrates by using pulsed laser deposition. The effects of oxygen pressure on the ferromagnetism in the Mn-doped ZnO thin films are discussed. The carrier concentration was found to be controlled by varying the oxygen pressure. By decreasing oxygen pressure, the films exhibited increases in both the lattice constant and fundamental band gap energy. Large magneto resistance (MR) was observed in the film grown at 700 degrees C, especially over 10% in the positive MR. The results indicate the spin splitting caused by strong s-d exchange coupling between the conducting carriers and localized spins of Mn ions. (c) 2005 Published by Elsevier B.V.

引用

页码：66 / 69

页数：4

共 16 条

[1] Large magneto-optical effect in an oxide diluted magnetic semiconductor Zn1-xCoxO [J].