A one-phonon spin-lattice relaxation theory is developed for trimeric exchange clusters. The spin-phonon coupling arises from the modulation of the isotropic exchange interaction by thermal lattice vibrations. Both the mechanisms of relaxation transitions and Van Vleck dipolar broadening give the same order contributions to the observed E.S.R. line widths of trimeric chromium(III) carboxylates.
ASJC Scopus subject areas
- Molecular Biology
- Condensed Matter Physics
- Physical and Theoretical Chemistry