Electron paramagnetic resonance spectra of Cr+, Mn++, and Fe3+ in Cubic ZnS

Abstract

The paramagnetic spectra of the three S526 ions Cr+, Mn++, and Fe3+ have been measured in cubic ZnS. The paramagnetic resonance parameters g, a, and A are compared to the theories for these parameters for the S526 state. It is found that the covalent character of the lattice must be taken into account. For the parameter A, a linear relation is found to exist for all three ions between the value of A and the ionicity of the lattice. The extrapolated value of A at 100% ionicity is found to be in agreement with the calculations of Watson and Freeman. The values of g and a are found to be in qualitative agreement with the theories of Watanabe and Gabriel, Johnston and Powell. Exact calculations of the parameters g and a require a detailed knowledge of the environment of the ion. © 1963 The American Physical Society.