Abstract
Symmetry properties of pairs of identical exchange-coupled ions isolated in a diamagnetic host crystal are studied. Starting from a spin Hamiltonian allowing for exchange interaction, crystal-field and Zeeman splitting, the forms of the various coupling tensors for all possible symmetries are determined. Unitary transformations of the spin Hamiltonian and their influence on the coupling tensors are discussed. Asymmetric exchange-coupling tensors arise only on few occasions. Selection rules for magnetic dipole transitions are given for systems with high symmetry. As an example, magnetic resonances due to Cr 3+ pairs in ruby are considered.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
