Electron spin resonance studies on Cu2+doped at tetrahedrally coordinated Zn2+sites in the single crystals of guanadinium zinc sulfate

摘要

Electron spin resonance studies have been made on Cu2+doped single crystals of guanadinium zinc sulfate and incorporated at tetrahedrally coordinated Zn2+sites at 295thinsp;deg;K. The spectra could be fitted to an axial spin Hamiltonian and spectral parameters characterize largegpar;value and unusually small hyperfine splitting for the paramagnetic ion. The metalndash;ligand bonding is predominantly ionic and the 3dndash;4pmixing is an important feature in explaining the small hyperfine coupling constant.