Buckling and Ferromagnetism of Aligned Cr-Doped ZnO Nanorods

被引：34
|
作者：
Xu, Congkang [1 ]
Yang, Kaikun [1 ]
Liu, Yayong [1 ]
Huang, Liwei [1 ]
Lee, Hyungsuk [1 ]
Cho, Junghyun [1 ]
Wang, Howard [1 ]
机构：
[1] SUNY Binghamton, Dept Mech Engn, CAMM, Binghamton, NY 13902 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 49期
关键词：
D O I：
10.1021/jp806164b
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：
Aligned Cr-doped ZnO nanorods have been successfully fabricated at 600 degrees C by in situ doping of Cr into ZnO nanorods using a vapor transport approach. Comprehensive structural analyses indicate that dopant Cr occupies Zn sites in ZnO and nanorods align along the [00011 direction. Photoluminescence spectra reveal unusual features peaked at 401 and 488 nm, respectively. Magnetic measurements have shown that nanorod arrays exhibit ferromagnetism at 10 and 293 K, which is likely due to defect-mediated exchange interactions. Nanomechanical studies have revealed a critical buckling load of 517,mu N and a buckling energy of ca. 4.2 x 10(-11) J, respectively, for the Cr-doped ZnO nanorod arrays.
引用
收藏
页码：19236 / 19241
页数：6
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