Paramagnetic Resonance Spectrum of Manganese in Corundum

Abstract

The paramagnetic resonance spectrum of ${\mathrm{Mn}}^{2+}$ in ${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$ was measured at 3 cm. The spectrum can be expressed in a spin Hamiltonian with trigonal symmetry with the following parameters: ${g}_{\mathrm{II}}=2.0017\ifmmode\pm\else\textpm\fi{}0.001$, ${g}_{\ensuremath{\perp}}=2.000\ifmmode\pm\else\textpm\fi{}0.002$, $D=+194.2\ifmmode\pm\else\textpm\fi{}1$, $a\ensuremath{-}F=+21.9\ifmmode\pm\else\textpm\fi{}0.6$, $A=\ensuremath{-}79.6\ifmmode\pm\else\textpm\fi{}0.5$, $B=\ensuremath{-}78.8\ifmmode\pm\else\textpm\fi{}0.8$ in units of ${10}^{\ensuremath{-}4}$ ${\mathrm{cm}}^{\ensuremath{-}1}$.