Electron Spin Resonance of Z₁-centers in Potassium Chloride

Abstract

The paramagnetic resonance due to a Z₁-center electrons in potassium chloride is investigated. Since Z₁-centers are always accompanied by F-centers, the contribution from F-centers ought to be substracted from the resultant curve in order to get the absorption curve due to Z₁-center alone, which is found to be Gaussian with the half width of 79 oersteds and g value of 1.999. The result is annalyzed according to the model that an electron is trapped by a divalent cation substituted for a cation of the bulk crystal.