Transparent magneto-optical Ho2O3 ceramics: Role of self-reactive resultant oxyfluoride additive and investigation of vacuum sintering kinetics

Cheng, Hao; Lü, Bin; Liu, Yongxing; Zhao, Yan; Sakka, Yoshio; Li, Ji‐Guang

doi:10.1016/j.ceramint.2019.04.203

Cited by 34 publications

(19 citation statements)

References 39 publications

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“…The sodium terbium fluoride (NTF) [50,119] and the potassium terbium fluoride (KTF) crystals [72,120,121] also deserve attention: although they possess ∼20% lower Verdet constant, they exhibit a higher FOM parameter than the TGG crystal. Notable characteristics were recently reported for the rare-earth (RE) sesquioxide ceramics (RE 2 O 3 ; RE = Tb [122][123][124][125][126][127], Dy [48,[128][129][130] or Ho [47,[131][132][133]), which possess high concentrations of the magnetically-active RE 3+ ions. Among these, Tb 2 O 3 holds the record Verdet constant (∼3.5 times higher than TGG), followed by the Dy 2 O 3 (∼2 times higher (at 633 nm wavelength)) and Ho 2 O 3 (∼1.4 times higher (at 1064 nm wavelength)).…”

Section: Vis-nir Region (400 < λ < 1100 Nm)mentioning

confidence: 99%

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

et al. 2019

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We review the progress in the investigation of the Verdet constant of new magneto-active materials for the Faraday-effect-based devices used in high-power laser systems. A practical methodology for advanced characterization of the Verdet constant of these materials is presented, providing a useful tool for benchmarking the new materials. The experimental setup used for the characterization is a flexible and robust tool for evaluating the Faraday rotation angle induced in the magneto-active material, from which the Verdet constant is calculated based on the knowledge of the magnetic field and the material sample parameters. A general model for describing the measured Verdet constant data as a function of wavelength and temperature is given. In the final part of this review, we present a brief overview of several magneto-active materials, which have been to-date reported as promising candidates for utilization in the Faraday devices. This overview covers room-temperature investigations of the Verdet constant of several materials, which could be used for the ultraviolet, visible, near-infrared and mid-infrared wavelengths.

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Section: Vis-nir Region (400 < λ < 1100 Nm)mentioning

confidence: 99%

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

et al. 2019

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“…There have been some reports on the preparation of Tb 2 O 3 [33,34], Dy 2 O 3 [35][36][37], Ho 2 O 3 [38][39][40][41][42] and Er 2 O 3 [43] magneto-optical transparent ceramics. Ho 2 O 3 ceramics were first reported in 2002 [44].…”

Section: Introductionmentioning

confidence: 99%

“…However, the in-line transmittance was only ∼60 % at 1 μm. In 2019, Lu et al [38,39] prepared Ho 2 O 3 transparent ceramics with the in-line transmittance of 73 % at 1000 nm and measured the wavelength dependent Verdet constants at 632, 1064 and 1550 nm. Balabanov et al [40,[39][40][41][42] fabricated (Ho 1-x La x ) 2 O 3 (x = 0, 0.03, 0.05, 0.07 and 0.1) ceramics by vacuum sintering from nanopowders made by self-propagating high-temperature synthesis.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, microstructure and optical characterizations of holmium oxide (Ho2O3) transparent ceramics

Snetkov

et al. 2021

Journal of the European Ceramic Society

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“…Also, materials that can be processed to be transparent should have cubic crystal structure, or at least tetragonal or hexagonal, which have minimal birefringent effect. Till now, various transparent ceramics have been reported in the open literature, which are mainly based on oxides, such as YAG family, [20][21][22] sesquioxides, [23][24][25][26][27][28] spinel, [29][30][31][32] ferroelectrics, [33][34][35][36] etc., whereas nonoxides include fluorides and nitrides (oxynitrides). [37][38][39][40][41] Transparent ceramics with pyrochlore and fluorite structures have relatively high density and high refractive index, thus having advantages for applications, such as optical lenses and host of scintillators.…”

Section: Introductionmentioning

confidence: 99%

An overview on transparent ceramics with pyrochlore and fluorite structures

Liu

Xiang

et al. 2020

J. Adv. Dielect.

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Transparent ceramics have potential applications in various areas, including aerospace, relativistic optics industries, medical cares and defense. Specifically, they can be used as laser gain media, armor windows, IR domes, solid-state phosphors, scintillators and electro-optical components. From crystal structure point of view, transparent ceramic materials should have high crystallographic symmetries (cubic, tetragonal and hexagonal), which have minimal birefringent effect. Currently, transparent ceramics are dominantly based on oxide materials, although there are also nonoxides, such as fluorides and nitrides (oxynitrides). Transparent ceramics with pyrochlore and fluorite structures have attracted much attention in recent years, whereas fluorides are not well described in the open literature. Therefore, this paper is aimed to deliver an overview on the progress of the two categories of transparent ceramics, from material processing and characterization point of view.

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Transparent magneto-optical Ho2O3 ceramics: Role of self-reactive resultant oxyfluoride additive and investigation of vacuum sintering kinetics

Cited by 34 publications

References 39 publications

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

Verdet Constant of Magneto-Active Materials Developed for High-Power Faraday Devices

Fabrication, microstructure and optical characterizations of holmium oxide (Ho2O3) transparent ceramics

An overview on transparent ceramics with pyrochlore and fluorite structures

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