Tetragonal Yb3+ centers in KMgF3 crystals

Bespalov, V. F.; Kazakov, B. N.; Leushin, A. M.; Сафиуллин, Г. М.

doi:10.1134/1.1130079

Cited by 3 publications

(14 citation statements)

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“…2 shows that this spectrum qualitatively coincides with that in Refs. [15,16]. However, the frequencies of the main lines slightly differ leading to the shift of the crystalfield (CF) parameters B k from those obtained in Refs.…”

Section: Resultsmentioning

confidence: 53%

“…However, the frequencies of the main lines slightly differ leading to the shift of the crystalfield (CF) parameters B k from those obtained in Refs. [16,19].…”

Section: Resultsmentioning

confidence: 97%

“…The luminescence lines of Yb 3+ in Cs 2 NaYF 6 corresponding to the electron transitions T c from the 2 G 8 level to the sublevels of the 2 F 7/2 multiplet were chosen by analogy with Yb 3+ in CsCaF 3 [15,16]. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In Refs. [15,16], the modulation-phase method was used to determine the lines belonging to T c . It distinguishes luminescence lines of different paramagnetic centers by the lifetime of the excited state.…”

Section: Resultsmentioning

confidence: 99%

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Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

Falin

Gerasimov

Leushin

et al. 2008

Journal of Luminescence

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Section: Resultsmentioning

confidence: 53%

“…However, the frequencies of the main lines slightly differ leading to the shift of the crystalfield (CF) parameters B k from those obtained in Refs. [16,19].…”

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

Falin

Gerasimov

Leushin

et al. 2008

Journal of Luminescence

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“…Five theoretical quantities for T c (the g-factor and four energy differences) and eight theoretical values for Tte t (six energy differences and two g-factors) were compared by the procedure described in ref. 23 with the corresponding experimental values in order to the determine ~ and CF parameters. The calculations were controlled by inclusion of the minimization of the differences between the calculated g-factors for the lowest Kramers doublet 3Ft7 and 2F 7 in the 2F5/2 multiplet and experimental ones.…”

Section: Determining the Potentials Of Crystal Fieldsmentioning

confidence: 99%

EPR and optical spectroscopy of Yb3+ ions in CaF2: an analysis of the structure of tetragonal centers

et al. 2004

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CaF 2 crystals doped with Yb 3+ ions have been studied by electron paramagnetic resonance (EPR) and optical spectroscopy. EPR spectra of paramagnetic centers (PCs) for eubic (Te) and tetragonal (T,ot) symmetries were identified. Empirical energy level diagrams were established and crystal field parameters were determined. Information on the CaF2:Yb 3 § phonon spectra was obtained from the electron-vibrational structure of the optical spectra. The crystal field parameters were used to analyze the crystal lattice distortions in the vicinity of the Yb 3 § ion. Within the framework of a superposition model, ir is established that four F-ions located symmetrically with respect to the fourfold axis from the side of the ion-compensator approach the impu¡ ion and deviate from the PC axis. The second set of four fluofine ions also approaches the Yb 3+ ion and the PC axis. The ion-compensator F-also approaches considerably the impu¡ ion.

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Structures and luminescence properties of Yb ³ + in the double perovskites Ba ₂ Y B ′O ₆ ( B ′=Ta ⁵⁺ , Nb ⁵⁺ ) phosphors

Zhou¹,

Zhang²,

Gao³

et al. 2011

Chinese Phys. B

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The Yb3+ doped Ba2YB′O6 (B′=Ta5+, Nb5+) were prepared by high temperature solid-state reaction method, their structures were determined by x-ray diffraction and refined by Rietveld method. The diffuse reflection absorption, excitation and emission spectra of Yb3+:Ba2YB′O6 (B′=Ta5+, Nb5+) were measured at room temperature. Under the excitation of ultraviolet light, these phosphors exhibit broad charge transfer band emissions of TaO6 or NbO6 centre with large Stokes shift. The Yb3+ doped into these hosts are situated at Y3+ sites of cubic symmetry (Oh). The experimental energy levels of Yb3+ in Ba2YTaO6 and Ba2YNbO6 were determined by photoluminescence and diffuse reflection absorption spectra. Their wavefunctions and theoretical energy levels were obtained by diagonalising the Hamiltonian matrix. The experimental energy levels were fitted by Levenberg—Marquardt iteration algorithm to determine crystal field parameters. Then, the magnetic-pole transition line strengths of Yb3+:Ba2YB′O6 (B′=Ta5+, Nb5+) from (2F5/2)Γ−8 to the low-energy states were calculated.

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Tetragonal Yb3+ centers in KMgF3 crystals

Cited by 3 publications

References 4 publications

Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

EPR and optical spectroscopy of Yb3+ ions in CaF2: an analysis of the structure of tetragonal centers

Structures and luminescence properties of Yb ³ + in the double perovskites Ba ₂ Y B ′O ₆ ( B ′=Ta ⁵⁺ , Nb ⁵⁺ ) phosphors

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Tetragonal Yb3+ centers in KMgF3 crystals

Cited by 3 publications

References 4 publications

Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

Optical spectroscopy of Yb3+ in the Cs2NaYF6 single crystal

EPR and optical spectroscopy of Yb3+ ions in CaF2: an analysis of the structure of tetragonal centers

Structures and luminescence properties of Yb 3 + in the double perovskites Ba 2 Y B ′O 6 ( B ′=Ta 5+ , Nb 5+ ) phosphors

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Structures and luminescence properties of Yb ³ + in the double perovskites Ba ₂ Y B ′O ₆ ( B ′=Ta ⁵⁺ , Nb ⁵⁺ ) phosphors