Electron paramagnetic resonance (EPR) and spin-lattice relaxation of trigonal Co2+ centers in ZnS single crystals

Single crystals with a ZnS structure are of great practical value, in which connection they are studied in detail by different methods including the spectroscopic. In particular, such crystals activated by ion impurities are investigated in detail by the EPR method. However, the spin-lattice relaxation (SLR) of such systems has hardly been studied. Papers studying the SLR of cubic Mn²⁺ centers [1] and trigonal Nd³⁺ and Yb³⁺ [2] centers in ZnS did only appear recently.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 141–143, August, 1978.The authors are grateful to A. I. Ryskin for providing the single crystals for the investigation and to R. Yu. Abdulsabirov for assistance in performing the experiments.