Ferromagnetism in ZnO Nanoparticles Induced by Doping of a Nonmagnetic Element: Al

被引：118

作者：

Gao, Daqiang ^{[1
]}

Zhang, Jing ^{[1
]}

Yang, Guijin ^{[1
]}

Zhang, Jinlin ^{[1
]}

Shi, Zhenhua ^{[1
]}

Qi, Jing ^{[1
]}

Zhang, Zhaohui ^{[1
]}

Xue, Desheng ^{[1
]}

机构：

[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat, MOE, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 32期

关键词：

ROOM-TEMPERATURE FERROMAGNETISM; OPTICAL-PROPERTIES; MAGNETISM; DEFECTS;

D O I：

10.1021/jp103458s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The room-temperature ferromagnetism of Zn1-xAlxO nanoparticles synthesized by a sol-gel method is reported in this paper. X-ray diffraction and selected area electron diffraction results show that the Al atoms have successfully substituted for some of the Zn atoms in the ZnO lattice without forming other new phases. The results also show that the samples possess a typical wurtzite structure. Declaration of ferromagnetism at room temperature has been established with the observed hysteresis and the coercive field in hysteresis loops. Magnetic measurements indicate that the saturation magnetization of the samples is sensitive to the content of Al dopants and that, for Zn0.97Al0.03O, the saturation magnetization reaches the maximum of 0.012 emu/g. Combining with the results of Raman, photoluminescence, and X-ray photoelectron spectroscopies, it is suggested that the observed ferromagnetic ordering of the Zn1-xAlxO nanoparticles is related to the doping-induced oxygen vacancies.

引用

页码：13477 / 13481

页数：5

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