Abstract
Abstract The optical absorption spectrum of Ni2+ in potassium zinc sulphate hexahydrate single crystal has been studied at room and liquid nitrogen temperatures. From the nature and position of the observed bands, a successful interpretation could be made assuming octahedral symmetry for the Ni2+ ion in the crystal. The splitting of 3T1g (F) band at liquid nitrogen temperature has been interpreted as due to spin-orbit interaction. The extra band observed at 16325 cm−1 at liquid nitrogen temperature has been explained to be the superposition of vibrational mode of SO2− 4 radical on 3T1g (F) band.
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