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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >The effect of substitution by cerium on the structure and magnetic properties of the compound NdFe2
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The effect of substitution by cerium on the structure and magnetic properties of the compound NdFe2

机译：铈取代对NdFe2化合物结构和磁性的影响

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The magnetic and magnetoelastic properties of Nd1-xCexFe2 have been investigated. The stable single Laves phase Nd1-xCexFe2 is synthesized at ambient pressure for x greater than or equal to 0.2. The successful formation of this Lavas phase can be ascribed to the strong Ca 4f bonding. Spin reorientation is observed around 150 K for Nd stoichiometric concentrations above 0.2. The lattice parameter, Curie temperature, low-temperature saturation magnetization and room-temperature anisotropic magnetostriction all increase with the Nd concentration. This indicates that the effect of the Ce ion is only dilution of the magnetism. NdFe2 is ferromagnetic with an estimated magnetic moment of 5.36 mu(B) per formula unit. a Curie temperature of 589 K and a mom-temperature magnetostriction coefficient of 420 ppm. The largest saturation magnetostriction 320 ppm, is obtained at x = 0.2. No apparent evidence of Ce ions changing their valence was observed. [References: 11]
机译：研究了Nd1-xCexFe2的磁和磁弹性性质。在环境压力下，x大于或等于0.2合成稳定的单Laves相Nd1-xCexFe2。该Lavas相的成功形成可以归因于牢固的Ca 4f键。对于高于0.2的Nd化学计量浓度，在150 K左右观察到自旋重新取向。晶格参数，居里温度，低温饱和磁化强度和室温各向异性磁致伸缩都随Nd浓度的增加而增加。这表明Ce离子的作用仅仅是磁的稀释。 NdFe2是铁磁性的，每个公式单位的估计磁矩为5.36 mu（B）。居里温度为589 K，妈妈温度磁致伸缩系数为420 ppm。在x = 0.2时可获得最大饱和磁致伸缩320 ppm。没有观察到铈离子改变其价态的明显证据。 [参考：11]

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