Intermediate Jahn-Teller effect within an orbital triplet - II — Application to the acoustic paramagnetic resonance of V3 in CaOReportar como inadecuado




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Abstract : Experimental results of Acoustic Paramagnetic Resonance of V3+ in CaO are presented. The spectra cannot be interpreted as due to the well known static or dynamic Jahn-Teller effect. On the other hand, they are well explained by the intermediate situation described in the preceding paper. Thus, V3+ : CaO appears as the first system representing the intermediate case of Jahn-Teller coupling for an orbital triplet. In addition, a general analysis of the hyperfine coupling for d2 systems submitted to Jahn-Teller coupling is presented. It explains satisfactorily why the hyperfine structure is not observed for the intermediate V3+ : CaO system. However, when applied to the dynamic V3+ : MgO system previously studied, it leads to an unacceptable contact term value.

Keywords : acoustic paramagnetic resonance calcium compounds crystal hyperfine field interactions Jahn Teller effect paramagnetic resonance of iron group ions and impurities triplet state vanadium





Autor: A. Nahmani R. Buisson

Fuente: https://hal.archives-ouvertes.fr/



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