Electronic absorption spectrum of copper-doped magnesium potassium phosphate hexahydrate

Abstract

The optical absorption and EPR spectra of magnesium potassium phosphate hexahydrate (MPPH) doped with copper ions are recorded both at room and liquid nitrogen temperatures. The spectrum is characteristic of Cu²⁺ in tetragonal symmetry. The spin-Hamiltonian parameters and molecular orbital coefficients are evaluated. A correlation between EPR and optical absorption studies is drawn.

Key Words:

• optical absorption
• EPR
• Cu²⁺ ion
• MgNH₄PO₄6H₂O
• magnesium potassium phosphate hexahydrate
• spin-Hamiltonian
• molecular orbital coefficients