Synthesis and magnetic properties of compounds
Synthesis and magnetic properties of compounds
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DOI：
10.1088/0953-8984/9/44/019
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发表时间：
1997-11
期刊：
影响因子：
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通讯作者：
Changlin Tang;W. Zhan;Y. X. Li;Daqin Chen;Junjie Du;G. H. Wu;Jianye Li;Kechang Jia
中科院分区：
文献类型：
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作者：
Changlin Tang;W. Zhan;Y. X. Li;Daqin Chen;Junjie Du;G. H. Wu;Jianye Li;Kechang Jia
研究了该化合物的合成和磁性。发现其形成强烈依赖于退火温度。常压下即可合成纯单相化合物。直到x=0.8，仍能观察到Laves结构的主相。研究了单相的晶化参数、磁矩和穆斯堡尔谱。居里温度和局域Fe磁矩随Pr浓度的增加而增大。外推其自发磁化强度和各向异性常数分别为4.98和1.5K。磁致伸缩随x的增大而增大，当x=0.5时，最大饱和磁致伸缩为200ppm。随着Pr浓度的增加，晶格参数和自发磁化强度在0.2<；x<；0.5范围内出现异常，这可以归因于Ce离子价态向四价态的转变。
The synthesis and magnetic properties of have been investigated. The formation of is found to depend strongly on annealing temperature. Pure single-phase compound can be synthesized at ambient pressure when . The main phase of the Laves structure can still be observed up to x = 0.8. The study of crystalline parameters, magnetic moments and Mossbauer spectra for single-phase is performed. Curie temperature and local Fe magnetic moment increase with the increasing Pr concentration. Extrapolating the trends the spontaneous magnetization and anisotropy constant of are 4.98 and at 1.5 K, respectively. Magnetostriction increases with increasing x and the largest saturation magnetostriction, 200 ppm, is observed for x = 0.5. With the increase of Pr concentration, lattice parameter and spontaneous magnetization anomalies exist in a specific range 0.2 < x < 0.5 that can be attributed to the change of Ce ion valence toward tetravalent.