Synthesis and magnetic characterization of Zn0.7Ni0.3Fe2O4 nanoparticles via microwave-assisted combustion route

被引：121
作者：
Sertkol, M. [1 ]
Koseoglu, Y. [1 ]
Baykal, A. [2 ]
Kavas, H. [1 ]
Toprak, M. S. [3 ]
机构：
[1] Fatih Univ, Dept Phys, TR-34500 Istanbul, Turkey
[2] Fatih Univ, Dept Chem, TR-34500 Istanbul, Turkey
[3] Royal Inst Technol KTH, Div Funct Mat, SE-16440 Stockholm, Sweden
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2010年 / 322卷 / 07期
关键词：
Nanostructured magnetic material; Chemical synthesis; Fourier transform infrared spectroscopy (FTIR); Vibrating sample magnetometer (VSM); Combustion synthesis; NI-ZN FERRITES; PARTICLE-SIZE; STRUCTURAL-PROPERTIES; GLASS BEHAVIOR; POWDERS; SPINEL; COFE2O4; UREA; COPRECIPITATION; MICROSTRUCTURE;
D O I：
10.1016/j.jmmm.2009.11.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the synthesis of Zn0.7Ni0.3Fe2O4 nanoparticles via microwave assisted combustion route by using urea as fuel. XRD and FT-IR analyses confirm the composition and structure as spinel ferrite. The crystallite size estimated from XRD (16.4nm) and the magnetic core size(15.04nm) estimated from VSM agree well, while a slightly smaller magnetic diameterre reflects a very thin magnetically dead layer on the surface of the nanoparticles. Morphological investigation of the products was done by TEM which revealed the existence of irregular shapes such spherical, spherodial and polygon. Magnetization measurements performed on Zn0.7Ni0.3Fe2O4 nanoparticles showed that saturation was not attained at even in the high magnetic field. The sample shows superparamagnetic behavior at around the room temperature and ferromagnetic behavior below the blocking temperature which is measured as 284 K. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：866 / 871
页数：6
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