THE LOW-FREQUENCY METHOD TO MEASURE THE LONGITUDINAL RELAXATION RATES OF THE SEPARATE TRANSITIONS OF THE SPIN-TRIPLET STATES


The compounds with the spin-triplet states (STS) find wide application in science and technology. Therefore, the investigation of the STS interaction with the lattice is of the great importance. This interaction is characterized by the spin-lattice relaxation rates – in other words, by the rates of the longitudinal (with respect to the acting magnetic field) relaxation. The special attention of the experimenters is directed to the rates of the longitudinal relaxation at the separate transitions of STS, the measurement of which was realized earlier only by the high-frequency method (electron paramagnetic resonance). In the given paper, the low-frequency method is suggested, enabling the measurement of the longitudinal relaxation rates at the STS separate transitions in the Gorter type experiment where the STS levels crossing is provided by the appropriate choice of the constant magnetic field value.