Spin canting and spin-flop transition in antiferromagnetic Cr(2)O(3) nanocrystals

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	Spin canting and spin-flop transition in antiferromagnetic Cr(2)O(3) nanocrystals
	D. Li ; Z. Han ; J. G. Zheng ; X. L. Wang ; D. Y. Geng ; J. Li ; Z. D. Zhang
刊名	Journal of Applied Physics
	2009
卷号	106 期号:5
关键词	antiferromagnetic materials chromium chromium compounds magnetic annealing magnetic structure magnetic transitions magnetisation nanostructured materials Neel temperature magnetic-properties nio nanoparticles fine particles ferritin systems
ISSN号	0021-8979
中文摘要	The structure and magnetic properties of Cr(2)O(3) and Cr nanoparticles have been investigated. The as-prepared Cr nanoparticles show a core/shell structure, consisting of a Cr core and a thin Cr oxide shell with a thickness of 1.5-2.5 nm. Annealing the Cr nanoparticles in air leads to the formation of Cr(2)O(3) nanoparticles with spherical morphology. The temperature dependence of the magnetization indicates that these Cr(2)O(3) nanocrystals are antiferromagnetic below their Neacuteel temperature of 320 K and undergo an antiferromagnetic to weak-ferromagnetic transition below about 140 K due to spin canting at disordered surfaces. Below 100 K, a spin-flop transition is induced by an external field with a critical field lower than about 7 T.
原文出处	://WOS:000269850300082
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32015]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	D. Li,Z. Han,J. G. Zheng,et al. Spin canting and spin-flop transition in antiferromagnetic Cr(2)O(3) nanocrystals[J]. Journal of Applied Physics,2009,106(5).
APA	D. Li.,Z. Han.,J. G. Zheng.,X. L. Wang.,D. Y. Geng.,...&Z. D. Zhang.(2009).Spin canting and spin-flop transition in antiferromagnetic Cr(2)O(3) nanocrystals.Journal of Applied Physics,106(5).
MLA	D. Li,et al."Spin canting and spin-flop transition in antiferromagnetic Cr(2)O(3) nanocrystals".Journal of Applied Physics 106.5(2009).