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Competing magnetic interactions in Dy1-xSmxFe10Si2 compounds

机译:Dy1-xSmxFe10Si2化合物中竞争的磁相互作用

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The spin reorientation temperatures of Dy1-x SmxFe10Si2 compounds with x=0, 0.1, 0.2, 0.3, 0.4, 0.6 and 1.0 were investigated using dc magnetization measurements in the temperature range from 5 to 350 K. The spin reorientation (SR) temperature was observed to drop gradually from 255 to 52 K as Sm content was increased from x=0 to 0.4. No SR temperature was observed for x > 0.4. Magnetization measurements using vibrating sample magnetometry (VSM) were carried out from room temperature to 650 K to determine the dependence of the Curie temperature on Sm content. The Curie temperatures shifted to higher values as the Sm content was increased. X-ray powder diffraction studies revealed that the substitution of Sm for Dy leads to an increase in the lattice parameter a and the unit cell volume V while the lattice parameter c remained constant. (C) 2005 Elsevier Ltd. All rights reserved.
机译:使用dc磁化测量在5至350 K的温度范围内研究了x = 0、0.1、0.2、0.3、0.4、0.6和1.0的Dy1-x SmxFe10Si2化合物的自旋重取向温度。当Sm含量从x = 0增加到0.4时,可观察到从255逐渐下降到52K。 x> 0.4时未观察到SR温度。使用振动样品磁力法(VSM)从室温到650 K进行磁化测量,以确定居里温度对Sm含量的依赖性。随着Sm含量的增加,居里温度转变为更高的值。 X射线粉末衍射研究表明,Sm替代Dy导致晶格参数a和晶胞体积V增大,而晶格参数c保持恒定。 (C)2005 Elsevier Ltd.保留所有权利。

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