Ferromagnetic properties in undoped and Cr-doped SnO2 nanowires

被引：51
|
作者：
Zhang, Li [1 ]
Ge, Shihui [1 ]
Zuo, Yalu [1 ]
Wang, Juan [1 ]
Qi, Jing [1 ]
机构：
[1] Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Chemical vapor deposition (CVD); Nanostructure; Ferromagnetic semiconductor; Defects; OXYGEN; MAGNETISM; OXIDE;
D O I：
10.1016/j.scriptamat.2010.06.025
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We presented detailed characterizations of the ferromagnetic properties of undoped and Cr-doped SnO2 nanowires synthesized by chemical vapor deposition. All the samples exhibit room-temperature ferromagnetism. Our experiments reveal that, in addition to the contribution of surface oxygen vacancies, Cr doping into SnO2 plays an important role in tuning the ferromagnetism of SnO2 nanostructures. Doping the SnO2 nanowires with 1.8 at.% Cr enhances the magnetization by 28%. We applied the bound magnetic polaron model to successfully explain the enhancement of ferromagnetism. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：953 / 956
页数：4
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