the book is devoted to the analysis of
spectral, vibronic and magnetic properties of 3d ions in a wide
range of crystals, used as active media for solid state lasers and
potential candidates for this role. crystal field calculations
including first-principles calculations of energy levels and
absorption spectra and comparison of these results with
experimental spectra, janh-teller effect, analysis of vibronic
spectra, materials science applications are systematically dealt
with. the chapters are relatively independent and can be read
separately.
the book can be useful for researchers working in the areas of
crystal spectroscopy,materials science and its optical
applications, post-graduate and under graduate students.
關於作者:
Dr. N.M. Avram is an Emeritus Professor at
the Physics Department, West University of Timisoara, Romania; Dr.
M.G. Brik is a Professor at the Institute of Physics, University of
Tartu, Estonia.
目錄:
1 recent development in laser crystals with 3d ions
1.1 introduction
1.2 general properties and aspects of tunable solid-state
lasers
1.2.1 the prep rational aspect
1.2.2 the spectroscopic aspect
1.2.3 the laser aspect
1.2.4 comparison between lasers based on the 3d-3d and 4f-4f
transitions
1.3 transition metal ion lasers--recent developments
1.3.1 overview of progress in transition metal ion lasers
1.3.2 recent progress in the transition metal ion lasers
1.4 summary
references
2 exchange charge model of crystal field for 3d ions
2.1 introduction
2.2 ions with 3d1-configuration ti3+, v4+, cr5+, mn6+
2.2.1 ti3+
2.2.2 v4+
2.2.3 cr5+
2.2.4 mn6+
2.3 ions with 3d2-configuration v3+, cr4+, mn5+
2.3.1 v3+
2.3.2 cr4+
2.3.3 mn5+
2.4 ions with 3d3-configuration v2+, cr3+, mn4+, fe5+
2.4.1 v2+
2.4.2 cr3+
2.4.3 mn4+
2.4.4 isoelectronic cr3+, mn4+ and fe5+ doped in srtio3
2.5 ions with 3d4-configuration v+, cfi+, mn3+, fe
2.6 ions with 3ds-configuration mn2+, fe3+
2.7 ions with 3d6-configuration co3+, fe2+
2.8 ions with 3dt-configuration co2+, ni3+
2.9 ions with 3ds-configuration ni2+, cu3+
2.10 ions with 3d9-configuration cu2+
2.11 conclusions
references
3 snperposition model and its applications
3.1 background
3.2 underlying assumptions and formulation of the superposition
model
3.2.1 superposition model assumptions
3.2.2 superposition model formula
3.2.3 distance dependence in superposition model
3.2.4 linkage with the angular overlap model aom
3.2.5 quadratic rotational invariants and the superposition
model
3.2.6 superposition model in zero-field splittings
3.3 applications of superposition model in selected systems
3.3.1 different ways of using the superposition model
3.3.2 low-lying states of cr3+ at c3 sites in linbo3
3.3.3 spin-hamiltonian parameters for 3d5 ions in oxide
crystals
3.3.4 cr3+ at non-cubic sites in mgo
3.3.5 orbit-lattice coupling for cr3+ in ruby
3.4 conclusions
references
4 spin-hamiltonian parameters and lattice distortions around 3dn
impurities
4.1 introduction
4.2 calculation methods of spin-hamiltonian parameters
4.2.1 perturbation theory method ptm
4.2.2 complete diagonalization of energy matrix method cdm
4.3 impurity-ligand distances for 3dn impurities in cubic sites of
crystals
4.4 low-symmetry distortions of the 3dn impurity centers in
crystals
4.5 defect properties related to the defect structures of 3dn
impurity centers in crystals
4.5.1 local compressibility and local thermal expansion
coefficient
4.5.2 defect model of 3dn impurity center
4.5.3 local phase transition behavior for the 3dn impurity centers
in abx3-type perovskites
4.5.4 determination of the substitutional sites for 3dn impurities
in crystals
references
5 dynamic jahn-teller effect in crystals doped with 3d ions
5.1 introduction
5.2 a brief survey
5.2.1 3dl, ti3+ and v4+
5.2.2 3d2, cr4+ and v3+
5.2.3 3d3, v2+ and cr3+
5.2.4 3d4, v+, cr2+ and mn3+
5.2.5 3d5, fe3+ and mn2+
5.2.6 3d6, fe2+
5.2.7 3d7, co2+
5.2.8 3d8,ni2+
5.2.9 3d9, ni+ and cu2+
5.3 the hamiltonian
5.3.1 the free ion
5.3.2 the crystalline field
5.3.3 the jt interaction
5.3.4 aworked example
5.3.5 real life approximations
5.4 calculation procedures
5.4.1 the lanczos method
5.4.2 lanczos instabilities
5.4.3 the glauber states approach
5.5 some illustrative examples fe2+, v2+, cr2+
5.5.1 fe2+ in ii -vi and m-v semiconductors
5.5.2 v2+
5.5.3 cr2+ in zns and znse
5.6 conclusions
acknowledgements
a the symmetric displacements of a tetrahedron
references
6 first-principles calculations of crystal field effects and
absorption spectra for 3d ions in laser crystals
6.1 introduction
6.2 basic foundations of the dvme metho.d
6.3 applications of the dvme method
6.3.1 microscopic analysis of the crystal field effects and
"ligand-impurity ion" charge transfer transitions in cs2nayx6 x=f,
c1, br crystals doped with cr
6.3.2 calculations of optical spectra for 3d ions in crystals
6.3.3 calculations of the xanes spectra
6.4 conclusion
acknowledgements
references
7 cobalt complexes in znse crystals as new absorbers for non-linear
optical devices
7.1 introduction
7.2 crystal growth
7.3 optical investigations
7.4 molecular dynamics geometry optimization
7.4.1 methods of molecular dynamics simulation
7.4.2 results of calculations
7.5 photo-induced simulation of nonlinear absorption kinetics
constants
7.6 conclusion
references