Spectra of doped transition metal ions in K₂SO₄-ZnSO₄ glasses

Abstract

Sulphate glasses prepared from K₂SO₄-ZnSO₄ system were doped with Fe²⁺, Co²⁺, Ni²⁺ and Cu²⁺ ions in the form of their sulphates. The spectra in the visible region indicated octahedral coordination of these ions. The spectral features remain unaffected in the entire composition range. Hence the zinc ion in these binary sulphate glasses is likely to retain octahedral coordination in the entire glass forming compositions.