Electron spin resonance study of NiFe2O4 nanosolids compacted under high pressure

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	Electron spin resonance study of NiFe2O4 nanosolids compacted under high pressure
	Y. Sui; D. P. Xu; F. L. Zheng; W. H. Su
	1996
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	80 期号:2 页码:719-723
摘要	In this article, NiFe2O4 nanosolids are prepared by compacting nanoparticles, synthesized by the coprecipitation method, under different pressures. The variations of structure and interface states of the NiFe2O4 nanosolids with compacting pressures are studied by x-ray diffraction and electronic spin resonance (ESR). It is found that the crystal structure of the nanosolids has not changed under pressure up to 6.0 GPa, but the linewidth and g-factor values of their ESR spectra increased significantly with increasing pressure up to 4.5 GPa and then decreased slightly with further increase of pressure. These variations are discussed in terms of the changes of interparticle magnetic dipole interaction and superexchange interaction in NiFe2O4 nanosolids under different pressures. The experimental results suggest that 4.5 GPa is the optimum forming pressure, under which the NiFe2O4 nanoparticles can be compacted into a dense solid with their structure and nanoproperties still preserved. (C) 1996 American Institute of Physics.
部门归属	jilin univ,dept phys,changchun 130023,peoples r china. acad sinica,int ctr mat phys,shenyang 110015,peoples r china. ccast,world lab,ctr condensed matter & radiat phys,beijing 100080,peoples r china.;sui, y (reprint author), jilin univ,res grp rare earth solid state phys,changchun 130023,peoples r china
关键词	Nanocrystalline Materials Ferrites
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38398
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Sui,D. P. Xu,F. L. Zheng,et al. Electron spin resonance study of NiFe2O4 nanosolids compacted under high pressure[J]. Journal of Applied Physics,1996,80(2):719-723.
APA	Y. Sui,D. P. Xu,F. L. Zheng,&W. H. Su.(1996).Electron spin resonance study of NiFe2O4 nanosolids compacted under high pressure.Journal of Applied Physics,80(2),719-723.
MLA	Y. Sui,et al."Electron spin resonance study of NiFe2O4 nanosolids compacted under high pressure".Journal of Applied Physics 80.2(1996):719-723.