Structure and magnetic properties of Mn-doped ZnO nanoparticles

被引：106

作者：

Luo, J

Liang, JK

Liu, QL

Liu, FS

Zhang, Y

Sun, BJ

Rao, GH

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

[2] Acad Sinica, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 08期

关键词：

D O I：

10.1063/1.1873058

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the crystal structure and magnetic properties of the Zn1-xMnxO compounds synthesized by a combustion method. The Zn1-xMnxO compounds with x=0-0.1 crystallize in the wurtzite ZnO structure. The lattice parameters a and c of Zn1-xMnxO increase linearly with the Mn content, indicating that Mn2+ ions substitute for Zn2+ ions. Scanning electron microscopy shows that the average particle radius of Zn0.95Mn0.05O is about 40 nm. From the Curie-Weiss behavior of susceptibility at high temperature, it was found that the Mn-Mn interaction is dominated by antiferromagnetic coupling with effective nearest-neighbor exchange constant J about -32 K and the large negative value of the Curie-Weiss temperature. (C) 2005 American Institute of Physics.

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