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Search Results (3)

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Keywords = KTb3F10

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12 pages, 1767 KB  
Review
Characteristics and Recent Development of Fluoride Magneto-Optical Crystals
by Zhonghan Zhang, Zhen Wu, Zhen Zhang, Liangbi Su, Anhua Wu, Yang Li and Jianghe Lan
Magnetochemistry 2023, 9(2), 41; https://doi.org/10.3390/magnetochemistry9020041 - 27 Jan 2023
Cited by 12 | Viewed by 3989
Abstract
Magneto-optical materials are the fundamental component of Faraday isolators; therefore, they are significantly important for solid-state laser systems. Fluoride magneto-optical crystals such as CeF3, KTb3F10 and LiTbF4 exhibit advantages of wide transmittance range, high optical homogeneity, smaller [...] Read more.
Magneto-optical materials are the fundamental component of Faraday isolators; therefore, they are significantly important for solid-state laser systems. Fluoride magneto-optical crystals such as CeF3, KTb3F10 and LiTbF4 exhibit advantages of wide transmittance range, high optical homogeneity, smaller thermal lensing and weaker thermal induced depolarization effect, and thus are promising candidates for Faraday isolators in high-power solid-state lasers. Recent progress in crystal growth and characterizations of these fluoride magneto-optical crystals are introduced. Possible applications of Faraday isolators based on various fluoride crystals are discussed, especially for solid-state lasers in the ultraviolet (UV) or infrared (IR) spectral region. Full article
(This article belongs to the Special Issue New Trends in Magneto-Optical Ceramics)
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14 pages, 3173 KB  
Article
Tb3+ Ion Optical and Magneto-Optical Properties in the Cubic Crystals KTb3F10
by Uygun V. Valiev, Denis N. Karimov, Chong-Geng Ma, Odiljon Z. Sultonov and Vasiliy O. Pelenovich
Materials 2022, 15(22), 7999; https://doi.org/10.3390/ma15227999 - 12 Nov 2022
Cited by 6 | Viewed by 2504
Abstract
The optical and magneto-optical characteristics of KTb3F10 crystals in the transition region of 5D4 → 7F6 4f8 configurations of the Tb3+ ion at temperatures of 90 and 300 K were studied. The schemes [...] Read more.
The optical and magneto-optical characteristics of KTb3F10 crystals in the transition region of 5D4 → 7F6 4f8 configurations of the Tb3+ ion at temperatures of 90 and 300 K were studied. The schemes of the optical transitions in the KTb3F10 crystals were constructed, and the energies of most of the Stark sublevels of the ground 7F6 and excited 5D4 multiplets of the Tb3+ ion split by the C4v symmetry crystal environment were determined. The presence of three- and two-doublet states in the energy spectra of the Tb3+ion multiplets 7F6 and 5D4, respectively, was established, which is in good agreement with theoretical predictions. The use of the wavefunctions of the Stark sublevels of multiplets split by a tetragonal crystal field and combining in the studied optical transition made it possible to explain some of the magnetic and magneto-optical features observed in the KTb3F10 single crystals. Full article
(This article belongs to the Section Optical and Photonic Materials)
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17 pages, 5813 KB  
Article
Growth Peculiarities and Properties of KR3F10 (R = Y, Tb) Single Crystals
by Denis N. Karimov, Irina I. Buchinskaya, Natalia A. Arkharova, Anna G. Ivanova, Alexander G. Savelyev, Nikolay I. Sorokin and Pavel A. Popov
Crystals 2021, 11(3), 285; https://doi.org/10.3390/cryst11030285 - 14 Mar 2021
Cited by 24 | Viewed by 4272
Abstract
Cubic KR3F10 (R = Y, Tb) single crystals have been successfully grown using the Bridgman technique. Growth of crystals of this type is complicated due to the hygroscopicity of potassium fluoride and melt overheating. The solution to the [...] Read more.
Cubic KR3F10 (R = Y, Tb) single crystals have been successfully grown using the Bridgman technique. Growth of crystals of this type is complicated due to the hygroscopicity of potassium fluoride and melt overheating. The solution to the problem of oxygen-incorporated impurities has been demonstrated through the utilization of potassium hydrofluoride as a precursor. In this study, the crystal quality, structure features, and optical, thermal and electrophysical properties of KR3F10 were examined. Data on the temperature dependences of conductivity properties of KTb3F10 crystals were obtained for the first time. These crystals indicated thermal conductivity equal to 1.54 ± 0.05 Wm−1K−1 at room temperature caused by strong phonon scattering in the Tb-based crystal lattice. Ionic conductivities of KY3F10 and KTb3F10 single crystals were 4.9 × 10−8 and 1.2 × 10−10 S/cm at 500 K, respectively, and the observed difference was determined by the activation enthalpy of F− ion migration. Comparison of the physical properties of the grown KR3F10 crystals with the closest crystalline analog from the family of Na0.5−xR0.5+xF2+2x (R = Tb, Y) cubic solid solutions is reported. Full article
(This article belongs to the Special Issue Functional Materials Based on Rare-Earth Elements)
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