Growth process and magnetic properties of alpha-FeSe nanostructures

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	Growth process and magnetic properties of alpha-FeSe nanostructures
	S. J. Li; D. Li; J. J. Jiang; G. B. Liu; S. Ma; W. Liu; Z. D. Zhang
	2014
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	115 期号:17
摘要	Growth process and magnetic properties of PbO-type alpha-FexSe nanostructures with shape changing from nanocacti to nanopetals and then to nanosheets are investigated. With iron acetylacetonate [Fe(acac)(3)] and Se powder as raw materials, the diffusion process of Fe atoms dominates the synthesis of alpha-FexSe nanocacti following phase transitions from FeSe2 to Fe3Se4 and finally to alpha-FexSe. When a mixed solution containing Se precursor and Fe(acac)(3) was used as the raw material, the formation of FeSe2 and Fe3Se4 can be avoided and, bended alpha-FexSe nanopetals can be prepared at 345 degrees C, which became flat nanosheets with a [001] preferred orientation as extending the reaction time from 1 to 4 h. No superconducting transition occurs in the alpha-FexSe (0.84 <= x <= 1.05) nanostructures due to composition heterogeneity or size effect. Magnetic measurements indicate that an antiferromagnetic component with a Neel point at about 45 K dominates the magnetic properties of the alpha-Fe0.87Se nanosheets. (C) 2014 AIP Publishing LLC.
部门归属	[li, d.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; li, d (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; dali@imr.ac.cn
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72873
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. J. Li,D. Li,J. J. Jiang,et al. Growth process and magnetic properties of alpha-FeSe nanostructures[J]. Journal of Applied Physics,2014,115(17).
APA	S. J. Li.,D. Li.,J. J. Jiang.,G. B. Liu.,S. Ma.,...&Z. D. Zhang.(2014).Growth process and magnetic properties of alpha-FeSe nanostructures.Journal of Applied Physics,115(17).
MLA	S. J. Li,et al."Growth process and magnetic properties of alpha-FeSe nanostructures".Journal of Applied Physics 115.17(2014).