Crystal structure and magnetic properties of Nd(Mn(1-x)Fe(x))(2)Si(2) compounds

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	Crystal structure and magnetic properties of Nd(Mn(1-x)Fe(x))(2)Si(2) compounds
	Y. Q. Chen; J. Luo; J. K. Liang; J. B. Li; G. H. Rao
	2009
发表期刊	Chinese Physics B
ISSN	1674-1056
卷号	18 期号:11 页码:4944-4948
摘要	X-ray powder diffraction, resistivity and magnetization studies have been performed on polycrystalline Nd(Fe(x)Mn(1-x))(2)Si(2) (0 <= x <= 1) compounds which crystallize in a ThCr(2)Si(2)-type structure with the space group 14/mmm. The field-cooled temperature dependence of the magnetization curves shows that, at low temperatures, NdFe(2)Si(2) is antiferromagnetic, while the other compounds show ferromagnetic behaviour. The substitution of Fe for Mn leads to a decrease in lattice parameters a, c and unit-cell volume V. The Curie temperature of the compounds first increases, reaches a maximum around x = 0.7, then decreases with Fe content. However, the saturation magnetization decreases monotonically with increasing Fe content. This Fe concentration dependent magnetization of Nd(Fe(x)Mn(1-x))(2)Si(2) compounds can be well explained by taking into account the complex effect on magnetic properties due to the substitution of Mn by Fe. The temperature's square dependence on electrical resistivity indicates that the curve of Nd(Fe(0.6)Mn(0.4))(2)Si(2) has a quasi-linear character above its Curie temperature, which is typical of simple metals.
部门归属	[chen ye-qing; luo jun; liang jing-kui; li jing-bo; rao guang-hui] chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100190, peoples r china. [liang jing-kui] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;luo, j (reprint author), chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100190, peoples r china;jluo@aphy.iphy.ac.cn
关键词	Nd(Fe(x)Mn(1-x))(2)Si(2) Crystal Structure Magnetic Properties Resistivity Neutron-diffraction Rmn2ge2 Compounds Solid-solution Silicides 0-less-than-or-equal-to-x-less-than-or-equal-to-1 Behavior Ndfe2si2
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31840
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Q. Chen,J. Luo,J. K. Liang,et al. Crystal structure and magnetic properties of Nd(Mn(1-x)Fe(x))(2)Si(2) compounds[J]. Chinese Physics B,2009,18(11):4944-4948.
APA	Y. Q. Chen,J. Luo,J. K. Liang,J. B. Li,&G. H. Rao.(2009).Crystal structure and magnetic properties of Nd(Mn(1-x)Fe(x))(2)Si(2) compounds.Chinese Physics B,18(11),4944-4948.
MLA	Y. Q. Chen,et al."Crystal structure and magnetic properties of Nd(Mn(1-x)Fe(x))(2)Si(2) compounds".Chinese Physics B 18.11(2009):4944-4948.