Controlled Fabrication of Mn0.6Zn0.4Fe2O4 Magnetic Submicrospheres and Their Magnetic Properties

doi:10.3969/j.issn.0251-0790.2012.07.003

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (07): 1376.doi: 10.3969/j.issn.0251-0790.2012.07.003

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Controlled Fabrication of Mn_0.6Zn_0.4Fe₂O₄ Magnetic Submicrospheres and Their Magnetic Properties

WANG Yi-Long^1,2, ZHANG Huan^1,2, ZHAO Su-Ling^1,3

1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology, Wuhan 430070, China;
2. Department of Chemistry, School of Sciences,Wuhan University of Technology, Wuhan 430070, China;
3. Center for Material Research and Testing, Wuhan University of Technology, Wuhan 430070, China

Received:2011-12-15 Online:2012-07-10 Published:2012-07-10

Abstract

Abstract: Monodispersed manganese-zinc ferrite(Mn_0.6Zn_0.4Fe₂O₄) submicrospheres were synthesized by a simple solvothermal method. The influences of reaction parameters on the structure, morphology, diameter and magnetic properties of the Mn_0.6Zn_0.4Fe₂O₄ submicrospheres were investigated. The results showed that metal ions were first hydrolyzed to form ferric hydroxide, manganic hydroxide and zinc hydroxide, which then dehydrated to form Mn_0.6Zn_0.4Fe₂O₄ nanoparticles. These Mn_0.6Zn_0.4Fe₂O₄ nanoparticles first agglomerated to produce homogeneous submicrospheres with loose structure, and finally evolved into compact monodispersed submicrospheres through Ostwald ripening. Increasing the amount of ethylene glycol or polyethylene glycol or decreasing pH value, the diameter of the submicrospheres could be controlled in a range of 150-500 nm, while the size of nanoparticle which composed the submicrospheres decreased, consequently, saturation magnetization increased, remanence and coercivity decreased.

Key words: Manganese-zinc ferrite, Magnetic submicrosphere, Magnetic property

CLC Number:

O614.8
TB321

TrendMD:

WANG Yi-Long, ZHANG Huan, ZHAO Su-Ling. Controlled Fabrication of Mn_0.6Zn_0.4Fe₂O₄ Magnetic Submicrospheres and Their Magnetic Properties[J]. Chem. J. Chinese Universities, 2012, 33(07): 1376.

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Controlled Fabrication of Mn_0.6Zn_0.4Fe₂O₄ Magnetic Submicrospheres and Their Magnetic Properties

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