Magnetic properties of α-Fe2O3 nanowires

被引：78
|
作者：
Xu, YY [1 ]
Rui, XF [1 ]
Fu, YY [1 ]
Zhang, H [1 ]
机构：
[1] Peking Univ, Phys Mat Lab, State Key Lab Mesoscope Phys, Dept Phys, Beijing 100871, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2005年 / 410卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.cplett.2005.04.090
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：
Some basic magnetic properties of alpha-Fe2O3 nanowires synthesized by oxygenating pure iron are reported. The blocking temperature of the nanowires is 120 K, where the field-cooled and zero-field-cooled magnetization curves diverge, and the hysteresis loops vary notably with temperature. No evidence for Morin transition is found in the temperature range 4-300 K. In addition, the magnetic behavior below 50 K shows a further freezing of magnetic moments. Compared with nanoparticles, the nanowires show some significant differences in magnetic properties. (c) 2005 Published by Elsevier B.V.
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页码：36 / 38
页数：3
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