Optical Absorption Spectra of Crystal‐Field Transitions in MnO

1969 ◽  
Vol 50 (9) ◽  
pp. 4092-4094 ◽  
Author(s):  
Donald R. Huffman ◽  
R. L. Wild ◽  
M. Shinmei
Keyword(s):  
Optical Absorption ◽  
Crystal Field ◽  
Absorption Spectra ◽  
Optical Absorption Spectra

Optical Absorption Spectra and Dynamic Jahn-Teller Effect of V2+ Ions in ZnSe

2008 ◽  
Vol 63 (12) ◽  
pp. 830-838
Author(s):  
Yi-Yang Zhou
Keyword(s):  
Optical Absorption ◽  
Crystal Field ◽  
Absorption Spectra ◽  
Optical Absorption Spectra ◽  
Cubic Crystal ◽  
Racah Parameter ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Tetrahedral Crystal ◽  
Good Agreement

The Hamiltonian matrices for 3d3 ions in a cubic crystal field are introduced, based on a molecular orbital model, including the electronic Coulomb and tetrahedral crystal-field interactions and the spin-orbit coupling. The optical absorption spectra of V2+ ions in ZnSe are studied. Moreover, the various additional levels found close to 5680 cm−1 are considered. These levels are assumed to result from the dynamic Jahn-Teller splitting within the excitation levels 2T2 and 2T1 in ZnSe:V2+. The good agreement between the present results and the experimental observations indicates that the contribution of the covalence reduction factors NE and NT2 and of the Racah parameter A to the optical absorption spectra of V2+ ions in ZnSe is important. However, most of the previous theoretical studies of these spectra in ZnSe:V2+ have neglected the Racah parameter A, based on the classical crystalfield model. A significant charge-transfer effect found in recent works is confirmed in ZnSe:V2+.

Optical-absorption spectra of crystal-field transitions inMnPS3at low temperatures

1991 ◽  
Vol 44 (20) ◽  
pp. 11060-11066 ◽  
Author(s):  
V. Grasso ◽  
F. Neri ◽  
P. Perillo ◽  
L. Silipigni ◽  
M. Piacentini
Keyword(s):  
Optical Absorption ◽  
Crystal Field ◽  
Absorption Spectra ◽  
Low Temperatures ◽  
Optical Absorption Spectra
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