The synthesis and thermal effect of CoFe2O4 nanoparticles

被引：25

作者：

Chen, Y. ^{[1
,2
]}

Ruan, M. ^{[1
]}

Jiang, Y. F. ^{[1
]}

Cheng, S. G. ^{[2
]}

Li, W. ^{[1
]}

机构：

[1] Huangshi Inst Technol, Sch Chem & Mat Engn, Huangshi 435003, Peoples R China

[2] China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 493卷 / 1-2期

关键词：

Cobalt ferrite; Nanoparticles; Synthesis; Magnetic properties; Thermal effect;

D O I：

10.1016/j.jallcom.2009.12.170

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：

In order to develop new cell thawing agents, magnetic CoFe2O4 nanoparticles were synthesized by the co-precipitation method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometer. Furthermore, the thermal effect of CoFe2O4 nanoparticles under the alternating magnetic field was studied. The results showed that the size of CoFe2O4 particles increased with the heat-treatment temperature, i.e., 10-12 nm at 100 degrees C and 10-40 nm at 700 degrees C, leading to the increase in the saturation magnetization and remanent magnetization. Under the alternating magnetic field, both the thermal rate and the stable temperature of the CoFe2O4 nanoparticles increased with the concentration of nanoparticles. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：L36 / L38

页数：3

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