Structure and magnetic properties in Mn doped SnO2 nanoparticles synthesized by chemical co-precipitation method

被引：131

作者：

Tian, Z. M. ^{[1
]}

Yuan, S. L. ^{[1
]}

He, J. H. ^{[1
]}

Li, P. ^{[1
]}

Zhang, S. Q. ^{[1
]}

Wang, C. H. ^{[1
]}

Wang, Y. Q. ^{[1
]}

Yin, S. Y. ^{[1
]}

Liu, L. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 466卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Diluted magnetic semiconductor; Room temperature ferromagnetism;

D O I：

10.1016/j.jallcom.2007.11.054

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 microstructure and magnetic properties have been investigated systematically for Sn1-xMnxO2 (0 <= x <= 7%) nanoparticles synthesized by chemical co-precipitation method. The X-ray diffraction reveals that all samples are pure rutile-type tetragonal phase and the cell parameters a and c decrease monotonously with the increase of Mn content, indicated that Mn ions substitute into the lattice of SnO2. X-ray photoelectron suggests that Mn ions behave as the mixture state of Mn3+ and Mn4+ in samples. Magnetic investigations demonstrate that magnetic properties strongly depend on both the sintering temperature and doping content. No ferromagnetism is observed for samples sintered at high temperature (T-s = 800 degrees C), irrespective of the doping content. In contrast, the samples sintered at low temperature (T-s = 450 degrees C) possess room temperature ferromagnetism when the doping content is below 5%. A plausible explanation of the magnetic properties is presented in terms of bound magnetic polaron model. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：26 / 30

页数：5

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