Effect of chromium addition on the structural, morphological and magnetic properties of nano-crystalline cobalt ferrite system

被引：83
|
作者：
Koseoglu, Yuksel [1 ]
Oleiwi, Mousa Ibrahim Oleiwi [1 ]
Yilgin, Resul [2 ]
Kocbay, Abdullah N. [2 ]
机构：
[1] Fatih Univ, Dept Phys, TR-34500 Istanbul, Turkey
[2] Gebze Inst Technol, Dept Phys, TR-41400 Cayirova, Kocaeli, Turkey
来源：
CERAMICS INTERNATIONAL | 2012年 / 38卷 / 08期
关键词：
Hydrothermal synthesis; XRD; Magnetic nanoparticles; Mn-Co spinel ferrites; HIGH-TEMPERATURE SYNTHESIS; NANOCRYSTALLINE NICKEL; ELECTRICAL-PROPERTIES; ZINC FERRITES; NANOPARTICLES; COCRXFE2-XO4; FE3O4; MN; CONDUCTIVITY; COFE2O4;
D O I：
10.1016/j.ceramint.2012.05.055
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nano-crystalline chromium doped cobalt ferrite powders have been synthesized by PEG assisted hydrotherrnal route. The structural, morphological and magnetic properties of the products were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy and vibrating sample magnetometer (VSM). X-ray analysis showed that the samples were cubic spinel. SEM images reveal that the samples' surfaces exhibit well-defined crystalline nanoparticles of spherical shapes with small agglomeration. The addition of Cr3+ ions caused a decrease in the average crystallite size, magnetization and the coercive field of the sample. The observed decreases in saturation magnetization and coercivity are explained on the bases of exchange interactions. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：6671 / 6676
页数：6
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