Tailoring the magnetic properties of manganese ferrite with substitution of a small fraction dysprosium for iron

被引：6
|
作者：
Li, JJ [1 ]
Zhai, CX [1 ]
Liu, ML [1 ]
机构：
[1] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2005年 / 134卷 / 11期
关键词：
magnetic nanoparticles; magnetosrystallite anisotropy; Mossbauer spectra; dysprosium substitution;
D O I：
10.1016/j.ssc.2005.03.021
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Manganese ferrite nanoparticles with dysprosium (Dy) ions substituted for iron ions have been prepared by using a sol-gel method. Substitution of a small fraction Dy for Fe results in the larger magnetocrystallite anisotropy of MnFe2-xDyxO4 (x= 0.2, 0.4) nanoparticles than that of MnFexO4 nanoparticles. The magnetosrystallite anisotropy was enhanced with the increase in the substituted dysprosium content. Combining the result of Mossbauer spectra with ZFC and FC Curves, we know clearly that the Dy substitution can modify the anisotropy of MnFe2O4 nanoparticles for its strong spin-orbital coupling. Through this simple substitution. we can control the magnetosrystallite anisotropy of the magnetic nanoparticles and make good use of the products according as we need. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：759 / 764
页数：6
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