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Absorption Spectrum of Ni(II) Ions Doped in Lithium Sodium Potassium Sulphate Single Crystal

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Rama Kumar R., Venkata Reddy B.

Acta Physica Polonica A

1995

vol. 87

issue 6

1023-1029

The optical absorption spectra of lithium sodium potassium sulphate doped Ni^{2+} ions at 300 and 77 K was recorded. The observed bands are assigned as transitions from the ground state ^{3}A_{2g}(F) to various excited triplet and singlet states of the Ni^{2+} ion in octahedral symmetry. The splittings observed for the bands ^{3}T_{1g}(F) and ^{3}T_{2g}(F) at liquid nitrogen temperature have been explained as due to spin-orbit interaction. The oscillator strengths of the transitions were computed from the area under the curves. From a detailed analysis of the bands of the spectrum, the crystal field parameters B, C, Dq and ξ are evaluated.

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1 Acta Physica Polonica A

1 1995

1 Rama Kumar R.

1 Venkata Reddy B.

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Absorption Spectrum of Ni(II) Ions Doped in Lithium Sodium Potassium Sulphate Single Crystal