Magnetic properties of RCoSi2 compounds (R=rare earth)
Magnetic properties of RCoSi2 compounds (R=rare earth)
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RCoSi2化合物的磁性（R=稀土）
DOI：
10.1016/0304-8853(82)90006-3
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发表时间：
1982
影响因子：
2.7
通讯作者：
J. Muller
中科院分区：
文献类型：
--
作者：
Marco Pelizzone;H. Braun;J. Muller
制备了RCoSi2（R=稀土和Y）组成的新型三元硅化物，并发现其结晶结构为正晶型cenisi2。通过在2 ~ 250k之间的磁化率测量，研究了它们的磁性能。Ce和Y化合物表现出与温度无关的泡利顺磁性。R=Nd、Sm、Gd、Tb、Dy、Ho、Er和Tm的化合物在20k以下表现出反铁磁有序。顺磁态的有效稀土矩与自由离子值吻合较好，重稀土的nsamel温度随De Gennes因子而变化。没有迹象表明Co亚晶格对磁场有贡献。
New ternary silicides of composition RCoSi2(R=rare earth and Y) have been prepared and found to crystallize in the orthorhombic CeNiSi2-type structure. Their magnetic properties have been studied by means of susceptibility measurements between 2 and 250 K. The Ce and Y compounds show essentially temperature independent Pauli paramagnetism. The compounds with R=Nd, Sm, Gd, Tb, Dy, Ho, Er and Tm show antiferromagnetic ordering below 20 K. The effective rare earh moments in the paramagnetic state agree well with the free ion values, and, for the heavy rare earths, the Néel temperatures vary with the De Gennes factor. There is no indication for a magnetic contribution from the Co sublattice.