ELECTRON-PARAMAGNETIC-RESONANCE AND SUPERPOSITION MODEL INVESTIGATIONS OF MN2-CRYSTAL( ION DOPED IN SODIUM FORMATE SINGLE)

Electron paramagnetic resonance and superposition model analyses of Mn 2+ ion doped in a sodium formate single crystal have been carried out at room temperture. Two types of Mn2+ complexes were obtained. These c omplexes are magnetically equivalent but oriented differently. One Mn2 + ion replaces one Na+ ion and ejects one neighbouring Na+ ion for cha rge compensation. The Z-axis of each complex is directed along the Na-Na+ (vacancy) direction and the X and Y components along Na+-oxygen d irections. By replacement of Naf by Mn2+, much local rearrangement tak es place. The superposition model anlaysis supports these relaxation e ffects.