Crystal-field splitting and single-ion exchange of Ce and Yb impurities in 
dilute monopnictides

Wienand, K. H.; Elscher, B.; Steglich, F.

doi:10.1016/0304-8853(82)90054-3

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Crystal-field splitting and single-ion exchange of Ce and Yb impurities in dilute monopnictides

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Citation

Wienand, K. H., Elscher, B., & Steglich, F. (1982). Crystal-field splitting and single-ion exchange of Ce and Yb impurities in dilute monopnictides. Journal of Magnetism and Magnetic Materials, 28(3), 234-242. doi:10.1016/0304-8853(82)90054-3.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-C297-F

Abstract

We report measurements on the resistivity, susceptibility and ESR vs. temperature of monopnictides MZ (with M=Sc, Y, La and Z=As, Sb, Bi) which contain small amounts of Ce- or Yb-ions as doping material. Metallic conductivities are found in all of these systems. With increasing covalent character of the MZ host we observed: an increasing conductivity, a decreasing crystal-field splitting of the Ce3+- or Yb3+-ionic state and for both 4f-ions an increase of the negative 4f-conduction electron exchange constant.