Abstract
The optical absorption of single crystals of ZnGa 2Se 4:Ni 2+ grown by the chemical transport reaction method was investigated in the temperature region 20–300 K. In the single crystals the impurity optical absorption peaks due to the transitions 3 T 1( 3 F) → 3 T 2( 3 F), 3 T 1( 3 F) → 3 A 2( 3 F) and 3 T 1( 3 F) → 3 T 1( 3 P) of the Ni 2+ ions sited in the host lattice of the ZnGa 2Se 4 single crystal with Td symmetry appeared at 4444, 7874 and 11 600 cm −1, respectively. The crystal-field parameter and the Racah parameter were given by Dq = 340 cm −1 and B = 615 cm −1, respectively. The peak due to the transition 3 T 1( 3 F) → 3 T 1( 3 P) split into four levels by first order spin-orbit-coupling effects of Ni 2+ ions in the lower temperature below 150 K. The spin-orbit-coupling parameter was found to be λ = −400 cm −1.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.