Magnetic Properties of New Ternary Rare Earth Compounds RPt(Pd)Sb
Magnetic Properties of New Ternary Rare Earth Compounds RPt(Pd)Sb
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新型三元稀土化合物RPt(Pd)Sb的磁性
DOI：
10.1143/jpsj.61.4187
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发表时间：
1992
影响因子：
1.7
通讯作者：
K. Katoh
中科院分区：
文献类型：
--
作者：
M. Kasaya;H. Suzuki;Takeshi Yamaguchi;K. Katoh
本实验首次研究了稀土三元化合物RPtSb(R=稀土)的磁性和输运性质。RPtSb(R=La-Sm)晶体为CaN-2型结构。CePtSb、PrPtSb、NdPtSb和SmPtSb分别在4.5、8、15.5和6.7K表现出磁序。对于重稀土元素，EuPtSb和RPtSb(R=Gd-Yb)分别具有e-TiNiSi-和MgAgAs型晶体结构。GdPtSb和YbPtSb的电阻率表明，具有MgAgAs型的R3+PTSb是半金属。作为对比，还研究了分别与EuPtSb和YbPtSb同构的EuPdSb和YbPdSb的物理性质。EuPdSb和EuPtSb都是在T_N以下相变的金属。另一方面，YbPdSb显示出致密近藤化合物的输运性质特征。
Magnetic and transport properties of rare earth ternary compounds RPtSb (R=rare earths) were investigated for the first time in this experiments. RPtSb (R=La-Sm) crystallize in CaIn 2 -type structure. CePtSb, PrPtSb, NdPtSb and SmPtSb show magnetic order at 4.5, 8, 15.5 and 6.7 K, respectively. As for the heavier rare earth members, EuPtSb and RPtSb (R=Gd-Yb) are confirmed to have crystal structure of e -TiNiSi- and MgAgAs-type, respectively. Electrical resistivities of GdPtSb and YbPtSb suggest that R 3+ PtSb with MgAgAs-type are semi-metals. For comparison, physical properties of EuPdSb and YbPdSb, which are isostructural with EuPtSb and YbPtSb, respectively, were also investigated. EuPdSb as well as EuPtSb are metals accompanied with successive phase transitions below T N . On the other hand, YbPdSb shows transport properties characteristics of the dense Kondo compounds.