Synthesis and magnetic properties of Co1-xZnxFe2O4+γ nanoparticles as materials for magnetic fluid hyperthermia

被引：45

作者：

Veverka, M. ^{[1
]}

Veverka, P. ^{[1
]}

Jirak, Z. ^{[1
]}

Kaman, O. ^{[1
,2
]}

Knizek, K. ^{[1
]}

Marysko, M. ^{[1
]}

Pollert, E. ^{[1
]}

Zaveta, K. ^{[1
]}

机构：

[1] AS CR, Inst Phys, VVI, Prague 16253 6, Czech Republic

[2] Charles Univ Prague, Fac Sci, Dept Inorgan Chem, Prague 12840 2, Czech Republic

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 16期

关键词：

Magnetic nanoparticle; Cobalt zinc ferrite; Precipitation; Magnetic behavior; Magnetic fluid hyperthermia; COBALT FERRITE NANOPARTICLES; COPRECIPITATION METHOD; COFE2O4; NANOPARTICLES; SUPERPARAMAGNETISM; PARTICLES; ROUTE;

D O I：

10.1016/j.jmmm.2010.02.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanoparticles of the single spinel phase Co1-xZnxFe2O4+gamma of mean size 3-23 nm, as determined by X-ray diffraction analysis, were synthesized by the co-precipitation method followed by a temperature treatment. Magnetic studies carried out in the range of 4.5-550 K revealed gradual transition from ferrimagnetic to superparamagnetic to paramagnetic behaviour depending on the composition and particle size. The observed behaviour indicates a broad distribution of volume sizes of the nanoparticles. Particular importance can be ascribed to the composition of x = 0.6 where the observed transition temperature to the paramagnetic state at 310-334 K suggests applicability of this material for magnetic fluid hyperthermia in a self-controlled regime. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2386 / 2389

页数：4

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