Polarized optical absorption spectra, crystal-field energy levels, and transition line strengths of erbium in tetragonal Er(C2O4)(C2O4H).cntdot.3H2O

1991 ◽  
Vol 30 (20) ◽  
pp. 3813-3817
Author(s):  
Karl A. Schoene ◽  
Zameer. Hasan ◽  
John R. Quagliano ◽  
Frederick S. Richardson
Keyword(s):  
Optical Absorption ◽  
Crystal Field ◽  
Absorption Spectra ◽  
Energy Levels ◽  
Field Energy ◽  
Transition Line ◽  
Optical Absorption Spectra ◽  
Line Strengths

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

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 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 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-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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