Investigation on interface atomic state in compacted NiFe2O4 nanocrystalline by Mossbauer spectroscopy

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	Investigation on interface atomic state in compacted NiFe2O4 nanocrystalline by Mossbauer spectroscopy
	Y. Sui; W. H. Su; F. L. Zheng; D. P. Xu
	2000
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	286 期号:1 页码:115-118
摘要	In this paper, NiFe2O4 nanoparticles with average grain size of 12 nm were compacted into nanocrystalline materials under the pressure of up to 4.5 GPa. The Mossbauer spectra of NiFe2O4 nanocrystalline at room temperature show that the magnetic interaction and interface atomic state of nanocrystalline were influenced strongly by pressure. Under high pressure, the superparamagnetic relaxation of NiFe2O4 nanocrystalline were suppressed remarkably due to the enhancement of interparticle magnetic dipole interaction, and the degree of order of interface atoms was also improved gradually. At the same time, the information about the coordination polyhedron of interface atoms in NiFe2O4 nanocrystalline built under high pressure was provided by these Mossbauer spectra. (C) 2000 Elsevier Science S.A. All rights reserved.
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. dalian univ technol, state key lab mat modificat laser ion & electron, dalian 116024, peoples r china. jilin univ, res grp rare earth solid state phys, changchun 130023, peoples r china.;sui, y (reprint author), dalian univ technol, dept electromagnet engn, dalian 116024, peoples r china
关键词	Nanocrystalline Mossbauer Spectroscopy High Pressure Interface Atomic State High-pressure
URL	查看原文
WOS记录号	WOS:000088914700019
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37166
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Sui,W. H. Su,F. L. Zheng,et al. Investigation on interface atomic state in compacted NiFe2O4 nanocrystalline by Mossbauer spectroscopy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2000,286(1):115-118.
APA	Y. Sui,W. H. Su,F. L. Zheng,&D. P. Xu.(2000).Investigation on interface atomic state in compacted NiFe2O4 nanocrystalline by Mossbauer spectroscopy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,286(1),115-118.
MLA	Y. Sui,et al."Investigation on interface atomic state in compacted NiFe2O4 nanocrystalline by Mossbauer spectroscopy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 286.1(2000):115-118.