Impurity Cu+ centers in LiF single crystals

Nepomnyashchikh, A. I.; Shalaev, A. A.; Субанаков, А. К.; Paklin, A. S.; Bobina, N. S.; Myasnikova, A. S.; Shendrik, R. Yu.

doi:10.1134/s0030400x11090189

Cited by 13 publications

(7 citation statements)

References 9 publications

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“…This could be due to the presence of monovalent Cu + in 2b position. In most alkali halide crystals, the absorption resulting from the 3d 10 ↔ 3d 9 4s transition to Cu + is in the range of 180–250 nm, and the luminescence is observed in the range of 400–450 nm . As one can see from the reported transmission spectra (Figure b), no additional absorption bands could be isolated against the background of an intense intrinsic absorption of the crystal.…”

Section: Resultsmentioning

confidence: 85%

“…In most alkali halide crystals, the absorption resulting from the 3d 10 ↔ 3d 9 4s transition to Cu + is in the range of 180−250 nm, and the luminescence is observed in the range of 400−450 nm. 33 As one can see from the reported transmission spectra (Figure 5b), no additional absorption bands could be isolated against the background of an intense intrinsic absorption of the crystal. To observe the effect of irradiation on the optical absorption, luminescence, and ESR spectra, we need to synthesize crystals that are transparent in the visible and UV regions of spectra, the same as for the crystals of (Li,Na)Ba 12 (BO 3 ) 7 F 4 solid solution (Figure 2), which is the subject of our further research.…”

Section: ■ Introductionmentioning

confidence: 83%

“…This compound has a density of about 5.9 g/cm 3 , and a K-edge (K-edge) ∼ 10 keV, which is well suited for mammography . Monovalent copper single crystals can become a new matrix for effective tissue-equivalent dosimeters . The materials in which electrons occupy anion position (electrides) , can be presumably used for thermoionic and electron emission with a cold cathode .…”

Section: Discussionmentioning

confidence: 99%

“…34 Monovalent copper single crystals can become a new matrix for effective tissueequivalent dosimeters. 33 The materials in which electrons occupy anion position (electrides) 34,35 can be presumably used for thermoionic and electron emission with a cold cathode. 36 Combination of electrical conductivity and transparency is possible, which is very useful for flat displays and electronic devices.…”

Section: ■ Conclusionmentioning

confidence: 99%

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Optical and Magnetic Properties of Cu-Containing Borates with “Antizeolite” Structure

et al. 2019

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Crystals of copper-doped barium fluoride borate solid solutions Ba 3 (BO 3 ) 2−x F 3x :Cu were grown from hightemperature solution. Using X-ray single-crystal diffraction, the structure was solved and refined in Pbam space group. These crystals are colored in brown, revealing linear dichroism. Optical and electron spin resonance spectroscopic investigations concluded that the light absorption of Ba 3 (BO 3 ) 2−x F 3x :Cu crystals is caused by both the exciton and f ree charge carriers. This phenomenon is similar to those observed in other colored "antizeolites" built with the positively charged framework of porous [Ba 12 (BO 3 ) 6 ] 6+ building blocks (hence named as antizeolites). The coloring of Ba 3 (BO 3 ) 2−x F 3x :Cu crystals is associated with the absorption of Cu 2+ ions as well. For the first time, constants of the hyperfine interaction of copper ions Cu 2+ in octahedral fluorine surroundings [CuF 6 ] 4− have been determined.

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Section: Resultsmentioning

confidence: 85%

Section: ■ Introductionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: ■ Conclusionmentioning

confidence: 99%

See 2 more Smart Citations

Optical and Magnetic Properties of Cu-Containing Borates with “Antizeolite” Structure

et al. 2019

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“…The absorption spectra of Cu + ions are well studied for a number of alkaline-earth crystals (NaF:Cu + , NaCl:Cu + , LiCl:Cu + , etc.). In most alkali halide crystals, the absorption, resulting from the 3d 10 ↔ 3d 9 4s transition, is in the range of 180–250 nm, and the luminescence in the range of 400–450 nm is observed. − …”

Section: Results and Discussionmentioning

confidence: 99%

Crystal Chemical Design of Functional Fluoride Borates with “Antizeolite” Structure

Bekker

Solntsev

Yelisseyev

et al. 2020

Crystal Growth & Design

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“Antizeolite” borates are built with the positively charged porous [Ba12(BO3)6]6+ framework, hosting various guest anion groups. Resembling zeolitic structures, the porous borates ease with the control of structure-related properties by exchanging the type and amounts of those guest anion groups. Crystals of copper-doped “antizeolite” fluoride borate Ba12(BO3)6[BO3][LiF4]:Cu were grown from high-temperature solution. Using X-ray single-crystal diffraction, the structure was solved and refined in the centrosymmetric P42/mbc space group in contrast to noncentrosymmetric undoped Ba12(BO3)6[BO3][LiF4] crystals (P42 bc space group). Optical and electron spin resonance spectroscopic investigations concluded the presence of copper ions in both Cu+ and Cu2+ states, which makes the Ba12(BO3)6[BO3][LiF4]:Cu crystal a potential matrix for tissue equivalent dosimeters. Intensive luminescence band at 412 nm associated with the Cu+ centers was observed under 325 nm excitation. The activation of crystals creates centers of radiative recombination which enhance the thermally stimulated luminescence intensity.

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Fabrication and Characterization of Polyvalent Metals/Oxidized Polyvinyl Alcohol Hybrid Films with Improved Proton Conductivity and Optical Performances

et al. 2023

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Impurity Cu+ centers in LiF single crystals

Cited by 13 publications

References 9 publications

Optical and Magnetic Properties of Cu-Containing Borates with “Antizeolite” Structure

Optical and Magnetic Properties of Cu-Containing Borates with “Antizeolite” Structure

Crystal Chemical Design of Functional Fluoride Borates with “Antizeolite” Structure

Fabrication and Characterization of Polyvalent Metals/Oxidized Polyvinyl Alcohol Hybrid Films with Improved Proton Conductivity and Optical Performances

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