Structural and magnetic properties of CoxFe3-xO4 versus Co/Fe molar ratio

被引：46

作者：

Dippong, Thomas ^{[1
]}

Levei, Erika Andrea ^{[2
]}

Diamandescu, Lucian ^{[3
]}

Bibicu, Ion ^{[3
]}

Leostean, Cristian ^{[4
]}

Borodi, Gheorghe ^{[4
]}

Tudoran, Lucian Barbu ^{[5
]}

机构：

[1] Tech Univ Cluj Napoca, North Univ Ctr Baia Mare, Dept Biol & Chem, Baia Mare 430122, Romania

[2] Res Inst Analyt Instrumentat, INCDO INOE 2000, Cluj Napoca 400293, Romania

[3] Natl Inst Mat Phys, Magurele 077125, Romania

[4] Natl Inst Res & Dev Isotop & Mol Technol, Cluj Napoca 400293, Romania

[5] Univ Babes Bolyai, Fac Biol & Geol, Cluj Napoca 400015, Romania

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 394卷

关键词：

Cobalt ferrite nanoparticles; Magnetic properties; X-ray diffraction analysis; Mossbauer spectroscopy; COBALT FERRITE; CATION DISTRIBUTION; NANOPARTICLES; COERCIVITY; PARTICLES;

D O I：

10.1016/j.jmmm.2015.06.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CoxFe3-xO4 (x=0.5-2.5) magnetic nanoparticles were synthesized via redox reaction between cobalt nitrate, iron nitrate and 1-4-butanediol using five Co/Fe molar ratios, followed by calcination at 1000 degrees C. Single phase nanoscaled cobalt ferrite was obtained at x=1.0 and at slight Co excess (x=1.5), while at high Co/Fe molar ratios (x=2.0 and x=2.5) the prevailing phase was CoO accompanied by CoFe2O4 traces. The highest values of coercive field and saturation magnetization were obtained for the sample at x=1.0, while the lowest values were obtained in the sample with the highest Co excess (x=2.5). The results indicated that the used synthesis route was suitable for the synthesis of cobalt ferrite with moderate saturation magnetization and high coercive field values. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：111 / 116

页数：6

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