0000000001062975

AUTHOR

I. Biryukova

showing 3 related works from this author

Optical properties of lithium niobate single crystals

2005

Studies of thermal and γ-irradiation effects on the optical properties in congruous lithium niobate single crystals containing Y, Mg, Gd, B, and Zn dopants including samples with double dopants Y, Mg and Gd, Mg are reported. Formation of defects at irradiation and thermal treatment of the samples is explored by electron absorption spectra. Considerable increase of absorption with the dose of γ-radiation is observed at 500 nm. The changes of absorption examined under different conditions are explained by creation and destruction of Nb 4 + defects.

chemistry.chemical_compoundMaterials sciencechemistryAbsorption spectroscopyDopantLithium niobateAnalytical chemistryMineralogyIrradiationThermal treatmentAtmospheric temperature rangeAbsorption (electromagnetic radiation)Crystallographic defectphysica status solidi (c)
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<title>Optical characteristics of doped lithium niobate single crystals</title>

2003

Studing of the Raman spectra was established that an optical parameters of oxygen-polyhedral ferroelectric single crystals can be improved by increasing the degree of structural ordering of the cation sublattice along the polar axis by doping them. In this case the impurity ions with the ionic radii close to the radii of the main cations (Li+ and Nb5+) and charges intermediate between those of main cations (1<Z<5) in the area of rather low concentrations were shown to exert an ordering effect on the cation sublattice of a congruent lithium niobate single crystals. Moreover the crystal resistance to laser radiation is also observed to grow. It was determined that the effect of diminishing ph…

Materials scienceIonic radiusCondensed matter physicsDopingLithium niobatePhysics::OpticsMineralogychemistry.chemical_elementFerroelectricityIonCrystalCondensed Matter::Materials Sciencesymbols.namesakechemistry.chemical_compoundchemistryCondensed Matter::SuperconductivitysymbolsCondensed Matter::Strongly Correlated ElectronsLithiumRaman spectroscopySPIE Proceedings
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Effects of Ionising Radiation on Optical Properties of Lithium Niobate Single Crystals

2005

Studies of thermal and γ-irradiation effects on the optical properties in congruent lithium niobate single crystals containing Mg and Gd dopants including samples with double dopants Y, Mg are reported. Formation of defects at irradiation and thermal treatment of the samples is explored by analysis of the behaviour of electron absorption spectra. Considerable increase of absorption with the dose of γ-radiation is observed at 500 nm. The changes of absorption examined under different conditions are explained by creation and destruction of Nb 4+ defects.

Materials scienceDopantLithium niobateAnalytical chemistryThermal treatmentCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsIonizing radiationchemistry.chemical_compoundchemistryElectron absorptionThermalIrradiationAbsorption (electromagnetic radiation)Ferroelectrics
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