Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution

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	Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution
	D.; Li Li, S. J.; Dong, B. J.; Yang, T.; Liu, W.; Zhang, Z. D.
	2015
发表期刊	Epl
ISSN	0295-5075
卷号	109 期号:3
摘要	High-quality single crystals of sheet-like Fe3-xCrxSe4 (x = 0, 0.5, 0.7, 0.9) with < 001 > preferential orientation have been grown by a high-temperature flux method. First-principles calculations show that the lowest surface formation energy of the (001) crystal plane drives the layer growth. The magnetocrystalline anisotropy of the Fe3-xCrxSe4 crystals has been determined to be uniaxial with the b-axis as easy-magnetization direction. In Fe3Se4, a monotonic decrease of the magnetization with increasing temperature is observed, while the magnetization of the Cr-doped Fe3-xCrxSe4 crystals increases upon cooling and then decreases at some temperature, which increases with the Cr content. The Curie temperature (T-C), anisotropy field (H-K) and anisotropy constant (Ku) at 300K for Fe2.5Cr0.5Se4 are 365K, 54.2 kOe and 1.2 x 10(6) erg/cm(3), respectively, much higher than for the undoped Fe3Se4. This significant increase in the magnetic parameters T-C, H-K and K-u may be attributed to an enhanced ferromagnetic exchange coupling tuned by suitable Cr substitution in Fe3Se4. Copyright (C) EPLA, 2015
部门归属	[li, d. ; li, s. j. ; dong, b. j. ; yang, t. ; liu, w. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; li, d (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; dali@imr.ac.cn
关键词	Magnetic-properties Iron Selenides Fe3se4 Fese
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73837
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D.,Li Li, S. J.,Dong, B. J.,et al. Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution[J]. Epl,2015,109(3).
APA	D.,Li Li, S. J.,Dong, B. J.,Yang, T.,Liu, W.,&Zhang, Z. D..(2015).Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution.Epl,109(3).
MLA	D.,et al."Large magnetocrystalline anisotropy of Fe3-xCrxSe4 single crystals due to Cr substitution".Epl 109.3(2015).