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초록· 키워드
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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.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. EXPERIMENTAL
Ⅲ. RESULTS AND DISCUSSION
Ⅳ. CONCLUSION
ACKNOWLEDGEMENTS
REFERENCES
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