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MAGNETIC PROPERTIES OF REPb₂(RE : LIGHT RARE - EARTH ELEMENT) COMPOUNDS
Y. Hattori,R. Sugioka,K. Fukamichi,K. Suzuki,T. Goto 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
Systematic studies on the crystal structure and magnetic properties of light rare earth element(RE) compounds with Pb, REPb₂, have been carried out. Their crystal structure has been identified to be a MoSi₂type. The values of the effective magnetic moment for CePb₂ PrPb₂ and NdPb₂ are respectively very close to the theoretical values of RE³+. These three compounds are antiferromagnetic and exhibit a metamagnetic transition. The magnitude of the Neel temperature is proportional to two-thirds of the de Gennes factor. The magnetic entropy change for NdPb₂ is contrast to the value for CePb₂ heavy-fermion compound, comparable to the theoretical value. The magnetic contribution to the temperature dependence of resistivity for PrPb₂ is given by a form of -lnT in a wide temperature range, implying the Kondo system in analogy with CePb₂.