Effects of Hydrostatic Pressure on the Paramagnetic Resonance Spectra of Several Iron Group Ions in Cubic Crystals

Abstract

The magnetic resonance spectra of ${\mathrm{Cr}}^{3+}$, ${\mathrm{Mn}}^{2+}$, ${\mathrm{Fe}}^{3+}$, and ${\mathrm{Ni}}^{2+}$ present as substitutional impurities in MgO crystals and powders, and of ${\mathrm{Mn}}^{2+}$ in cubic ZnS have been observed as functions of hydrostatic pressure at room temperature. The results are interpreted assuming the local compressibilities to be equal to those of the pure host lattices.