Exchange interactions in a trigonal chromium (III) pair
- 1 December 1977
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 34 (6) , 1531-1543
- https://doi.org/10.1080/00268977700102751
Abstract
The theory of exchange interactions in the excited state of a trigonal chromium(III) pair which occurs in Cs3Cr2Cl9, and first nearest neighbours in ruby, is extended to the singly excited 2 T 1, 2 T 2 and 2 E(t 2 3) pair states. The multiplet splitting is described by an effective hamiltonian which includes trigonal field, spin-orbit coupling, first-order Zeeman effect and bilinear and biquadratic exchange. Previous calculations on the important single-ion intensity mechanism for 2 E pair states are incorrect. The corrected electric dipoles for 2 E and also for 2 T 1 and 2 T 2 pair states are presented.Keywords
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