Measurement of small concentrations of manganese in cadmium oxide (CdO) using electron magnetic resonance

Electron magnetic resonance (EMR) line widths of Mn2+ in CdO were measured in samples doped with small concentrations (up to 1.0 mol%) of Mn. The line width of one of the lines, which corresponds to the |1/2 1/2>↔|−1/2 1/2> transition, was found to change in a predictable way with Mn concentration, according to the theoretical equation ΔHpp=2.05+370f(1−f)42, where ΔHpp is the line width in mT and f is the Mn concentration in mol%. The experimental results show that the technique can be used to measure, rapidly and nondestructively, small concentrations of Mn in commercial CdO.