Synthesis and magnetic properties of Cu0.5Ni0.5Fe2O4 nanoparticles produced by glycothermal and hydrothermal processes

被引：6
作者：
Msomi, J. Z. [1 ]
Moyo, T. [2 ]
机构：
[1] Univ Free State, Dept Phys, ZA-9866 Phuthaditjhaba, South Africa
[2] Univ KwaZulu Natal, Sch Phys, ZA-4000 Durban, South Africa
来源：
HYPERFINE INTERACTIONS | 2009年 / 189卷 / 1-3期
关键词：
Mossbauer study; Ferrites; Hyperfine field; Coercive field; FERRITE POWDERS; MOSSBAUER; (ZN;
D O I：
10.1007/s10751-009-9910-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Cu0.5Ni0.5Fe2O4 nanoparticles have been synthesized in ethylene glycol solution and in deionised water. The glycothermal reaction was carried at 200 degrees C under gauge pressure of 100 psi. The hydrothermal treatment was done at 100 degrees C under zero pressure. Complete single-phase cubic spinel structure in the samples made by glycothermal (sample G) and hydrothermal (sample H) processes formed after annealing at 600 degrees C and 900 degrees C respectively. The coercive field of sample H increases from 72 Oe to 133 Oe after sintering at 700 degrees C and then decrease to 11 Oe on sintering at 1000 degrees C. This variation is attributed to surface effects and crossover from single to multidomain behavior due to increasing particle size.
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收藏
页码：151 / 158
页数：8
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