CRYSTALLINE FIELD THEORY OF Ni2+ COMPLEXES

1967 ◽  
Vol 45 (6) ◽  
pp. 2121-2131 ◽  
Author(s):  
R. Chatterjee
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Energy Levels ◽  
Spin Orbit Coupling ◽  
Optical Absorption Spectra ◽  
Crystalline Electric Field ◽  
Crystalline Field ◽  
Racah Parameters ◽  
Tetrahedral Complexes ◽  
Experimental Values

The energy levels of the octahedrally and the tetrahedrally coordinated 3d8 Ni2+ complexes have been calculated using the Racah formalism (1942), taking account of both the crystalline electric field and the spin-orbit coupling. The predicted optical absorption spectra are in satisfactory agreement with the observed spectra in the octahedral complexes by Hartmann and Müller (1958) and in the tetrahedral complexes by Cotton et al. (1961). The magnetic susceptibility calculated using these energy levels agrees with the experimental values. It is found that the Racah parameters must be reduced by 55% from the free ion values in order to explain the optical absorption spectra in tetrahedral complexes.

Optical absorption spectra and energy levels of Er3+ ions in KTaO3 crystals

2009 ◽  
Vol 35 (6) ◽  
pp. 566-568 ◽  
Author(s):  
A. P. Skvortsov ◽  
V. A. Trepakov ◽  
V. V. Krivolapchuk ◽  
N. K. Poletaev ◽  
S. Kapphan ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Energy Levels ◽  
Optical Absorption Spectra

Optical properties of HgS and HgS : Co2+ crystals

1991 ◽  
Vol 6 (12) ◽  
pp. 2677-2679 ◽  
Author(s):  
Sung-Hyu Choe ◽  
Ki-Su Yu ◽  
Jae-Eun Kim ◽  
Hae Yong Park ◽  
Wha-Tek Kim
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Room Temperature ◽  
Energy Levels ◽  
Band Gaps ◽  
Electronic Transitions ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Optical Absorption Spectra ◽  
Coupling Parameters

Melt-grown crystals of HgS and HgS : Co2+ were used to measure their optical absorption spectra. The optical energy band gaps of these crystals were 2.030 eV and 1.870 eV at room temperature, respectively. The impurity optical absorption peaks of Co2+ were observed at 4030, 5988, 12285, 12672, and 12905 cm−1. These peaks can be attributed to the electronic transitions between the split energy levels of Co2+ ion located at the Td symmetry site, where the crystal field, Racah, and spin-orbit coupling parameters were given by Dq = 403, B = 427, and Λ = −155 cm−1, respectively.

Optical absorption spectra and energy levels of Er3+ ions in glassy lithium tetraborate matrix

2014 ◽  
Vol 117 (5) ◽  
pp. 759-763 ◽  
Author(s):  
P. S. Danilyuk ◽  
K. P. Popovich ◽  
P. P. Puga ◽  
A. I. Gomonai ◽  
N. V. Primak ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Energy Levels ◽  
Lithium Tetraborate ◽  
Optical Absorption Spectra

scholarly journals Fast optical absorption spectra calculations for periodic solid state systems

2020 ◽  
Vol 15 (1) ◽  
pp. 89-113
Author(s):  
Felix Henneke ◽  
Lin Lin ◽  
Christian Vorwerk ◽  
Claudia Draxl ◽  
Rupert Klein ◽  
...  
Keyword(s):  
Solid State ◽  
Optical Absorption ◽  
Absorption Spectra ◽  
Optical Absorption Spectra
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