Absorption Spectrum of Ni(II) Ions Doped in Lithium Sodium Potassium Sulphate Single Crystal
R. Rama Kumar and B.C. Venkata Reddy
Department of Physics, S.V. University, Tirupati - 517 502, India
Received: January 30, 1995
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The optical absorption spectra of lithium sodium potassium sulphate doped Ni2+ ions at 300 and 77 K was recorded. The observed bands are as­signed as transitions from the ground state 3A2g(F) to various excited triplet and singlet states of the Ni2+ ion in octahedral symmetry. The splittings observed for the bands 3T1g(F) and 3T2g(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.
DOI: 10.12693/APhysPolA.87.1023
PACS numbers: 78.40.-q, 78.50.-w