Fabrication and characterization of highly transparent Fe2+:MgAl2O4 ceramics

Осипов, В. В.; Il'ichev, Nickolay N.; Шитов, В. А.; Пашинин, П. П.; Solomonov, V. I.; Sidorin, Andrey V.; Lukyashin, K. E.; Maksimov, R.N.; Tumorin, Viktor V.; Tikhonov, E. V.; Gulyamova, E. S.

doi:10.1117/12.2554510

Cited by 3 publications

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“…The fluorescent materials with Fe as activator ions have drawn a lot of attention in recent years owing to the potential application in red phosphors, fluorescence thermometry, and laser technology 1–3 . The Fe atom with electron arrangement of [Ar]3 d 6 4 s 2 is easy to lose two or three electrons to form Fe 2+ or Fe 3+ ion.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors

et al. 2022

J Am Ceram Soc.

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Nonstoichiometric alumina‐rich spinel provides diverse and changeable local environments for transition‐metal dopants. In this contribution, novel Mg0.752Al2.165−xO4:xFe3+ deep red‐emitting phosphors were designed and prepared by the solid‐state reaction method. The red emission presents an unexpected shift from 735 to 770 nm by comparing with Fe3+‐doped MgAl2O4. The excitation spectrum of Mg0.752Al2.165−xO4:xFe3+ is broadened in the UV region with a new strong peak at 320 nm. The crystal structure refinement and NMR spectra fitting reveal that the cation vacancies and disorder increase with excess Al3+ entering the spinel crystal lattice. According to the results of EPR, NMR, and PL/PLE measurements, it was proposed that the Fe3+ ions locate at the distorted octahedral coordination. The changes of the local structure of Fe3+ ions promote the doublet state's involvement in the d−d transition. It was proposed that the new excitation peak at 320 nm in Mg0.752Al2.165−xO4:xFe3+ is associated with the transitions from the ground state 6A1g(6S) to the 4A2g(4F)/T1g(4P) and doublet states. The transition between the lower energy excited state of 2T2g(2I) and 6A1g(6S) mainly contributes to the deep red emission and the red‐shifting effect.

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Section: Introductionmentioning

confidence: 99%

Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors

et al. 2022

J Am Ceram Soc.

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“…Widespectrum laser systems are particularly important, including covering "atmospheric transparence windows" (3-5 μm) and absorption bands of numerous molecular compounds: water molecules and oxygen-and carbon-containing impurities. Technologies for the synthesis of new crystals [6][7][8][9][10][11] , glasses [6,7,[12][13][14] , laser ceramics based on spinels [15][16][17][18] , and luminescent materials with a low-frequency phonon spectrum based on oxohalogenide systems-fluoride, chloride, bromide, and iodide-are being developed [19][20][21][22][23][24] . The authors note that the replacement of fluorine with other ions-chlorine, bromine, or iodine-in systems significantly extends the transparency range of glass-crystal ceramics to a longer-wave region.…”

Section: Introductionmentioning

confidence: 99%

Highly transparent ceramics for the spectral range from 1.0 to 60.0 µm based on solid solutions of the system AgBr–AgI–TlI–TlBr

et al. 2021

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The article is devoted to the technology for obtaining optical ceramics of AgBr−TlI and AgBr−TlBr 0.46 I 0.54 systems and manufacturing samples with different compositions. The new heterophase crystal ceramics are transparent without absorption windows in the spectral range from 1.0 to 60.0 μm. In the ceramics' transparency spectra based on the AgBr−TlI and AgBr−TlBr 0.46 I 0.54 systems fusibility diagrams, with an increase in the thallium halides mass fraction, as well as the replacement of the bromine ion with iodine, the maximum transparency shifts to a long infrared region.

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Synthesis and investigation of iron-doped manganese aluminate spinel nanopowders and ceramics

Осипов

Шитов

Платонов

et al. 2021

XV International Conference on Pulsed Lasers and Laser Applications

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Fabrication and characterization of highly transparent Fe2+:MgAl2O4 ceramics

Cited by 3 publications

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Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors

Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors

Highly transparent ceramics for the spectral range from 1.0 to 60.0 µm based on solid solutions of the system AgBr–AgI–TlI–TlBr

Synthesis and investigation of iron-doped manganese aluminate spinel nanopowders and ceramics

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Fabrication and characterization of highly transparent Fe2+:MgAl2O4 ceramics

Cited by 3 publications

References 0 publications

Crystal structure and luminescence mechanism of novel Fe3+‐doped Mg0.752Al2.165O4 deep red‐emitting phosphors

Crystal structure and luminescence mechanism of novel Fe3+‐doped Mg0.752Al2.165O4 deep red‐emitting phosphors

Highly transparent ceramics for the spectral range from 1.0 to 60.0 µm based on solid solutions of the system AgBr–AgI–TlI–TlBr

Synthesis and investigation of iron-doped manganese aluminate spinel nanopowders and ceramics

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Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors

Crystal structure and luminescence mechanism of novel Fe³⁺‐doped Mg_0.752Al_2.165O₄ deep red‐emitting phosphors