Crystal-field effects and f-derived specific heats in heavy-fermion compounds

Rietschel, H.; Renker, B.; Felten, R.; Steglich, F.; Weber, G.

doi:10.1016/0304-8853(88)90330-7

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Crystal-field effects and f-derived specific heats in heavy-fermion compounds

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Rietschel, H., Renker, B., Felten, R., Steglich, F., & Weber, G. (1988). Crystal-field effects and f-derived specific heats in heavy-fermion compounds. Journal of Magnetism and Magnetic Materials, 76-7, 105-111. doi:10.1016/0304-8853(88)90330-7.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-D4DA-0

Abstract

We discuss experimetal results of calorimetry on heavy-fermion compounds (HFC) with special regard to the f-derived specific heat ΔC. Attention is given to the extraction of ΔC and the uncertainties implied therein. The discussion includes some Ce-based 4f systems but concentrates on U-based 5f HFC. In four of these (UBe13, UPt3, URu2Si2, U2Zn17) distinct anomalies in ΔC have recently been found in the temperature range between 20 and 100 K which we think are likely to be caused by crystal-field effects thus indicating strong 5f localization.