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Quadrupolar interactions in Pr compounds: PrFe4P12 and PrBa2Cu3O6

A. Kiss·P. Fazekas
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Abstract

We examine trivalent Pr crystal field models with near-degeneracy of the two lowest crystal field levels, where interaction-induced quadrupolar and dipolar moments are as important as the permanent moments of the crystal field ground state. We find that the Gamma1-Gamma4 level scheme yields a successful description of the antiferroquadrupolar ordering of PrFe4P12. For PrBa2Cu3O6, we argue that quadrupolar interaction is important for understanding the Pr ordering transition at 11K.

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A. Kiss, P. Fazekas. 2003-05-18. Quadrupolar interactions in Pr compounds: PrFe4P12 and PrBa2Cu3O6. https://doi.org/10.1088/0953-8984%2F15%2F28%2F332

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