Preparation of Co1-xNixFe2O4 nanoparticles by coprecipitation method

被引：13

作者：

Ryu, BH ^{[1
]}

Chang, HJ ^{[1
]}

Choi, YM ^{[1
]}

Kong, KJ ^{[1
]}

Lee, JO ^{[1
]}

Kim, CG ^{[1
]}

Jung, HK ^{[1
]}

Byun, JH ^{[1
]}

机构：

[1] Korea Res Inst Chem Technol, Adv Mat Div, Taejon 305600, South Korea

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 2004年 / 201卷 / 08期

关键词：

D O I：

10.1002/pssa.200304669

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co1-xNixFe2O4 nanoparticles were prepared by a coprecipitation method. The effects of precipitants and Co/Ni ratio on particle shape and magnetic properties of Co1-xNixFe2O4 nanoparticles were investigated. The physical properties such as particle size, phase, and magnetic properties of Co1-xNixFe2O4 nanoparticles depended largely on the Co/Ni ratio and precipitant as well as heat-treatment. In case of using NaOH as a precipitant, the synthesized nanoparticles were magnetite phase including a small part of impurity which is needle shaped and non-magnetic material. On the other hand, the nanoparticles synthesized by NH4OH precipitant were amorphous phase. The coercive force of the nanoparticles was increased drastically with increasing heat-treatment temperature in the range of 400-600 degreesC. The high coercive force of magnetic nanoparticles with the size of 20-30 nm was obtained up to 1450-1800 Oe.

引用

页码：1855 / 1858

页数：4

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