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Sm3Se4: a heavy-fermion system without charge carriers

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Fraas, K., Ahlheim, U., Reinders, P. H. P., Schank, C., Caspary, R., Steglich, F., et al. (1992). Sm3Se4: a heavy-fermion system without charge carriers. Journal of Magnetism and Magnetic Materials, 108(1-3), 220-222. doi:10.1016/0304-8853(92)91419-T.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-D706-3
Abstract
Specific heat measurements down to 80 mK in magnetic fields up to 8 T have been done on Sm3Se4 to check the heavy-fermion character in non-metallic materials. Heavy-fermion character with a large gamma-value, 0.79 J/K2 mol Sm3+, is observed. Low-field magnetization measurements show magnetic ordering, presumably of frustrated kind, due to competing exchange interactions. Both the exchange mechanism and the possible Kondo state are discussed.