Microstructure of rapidly quenched YAG-based glass–ceramics prepared by aerodynamic levitation

Lee, Chi-Hoon; Jung, Sang-Kyo; Yoda, Shinichi; Cho, Won-Seung

doi:10.1016/j.ceramint.2015.07.085

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…The T g and T x for the as-prepared glass samples were 890 • C and 920 • C, respectively Figure 1a. Unlike the previously reported results [36,37], no apparent XRD sharp peak assigned to Y 3 Al 5 O 12 (YAG) crystal was observed for the as-made glass sample (Figure 1b). The XRD pattern for the sample after annealing at 920 • C for 30 min, clearly indicates that Y 3 Al 5 O 12 (YAG) crystal was deposited.…”

Section: Photoluminescence Properties Of Ce 3+ -Doped Yttrium Aluminu...contrasting

confidence: 96%

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

et al. 2020

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Direct three-dimensional laser writing of crystallization inside glass has been intensely studied as an attractive technique for fabricating photonic devices. In particular, polarization-dependent periodic nanostructures composed of the partial crystallization in glass can be self-assembled through focused irradiation of femtosecond pulses. Here, we report on the Y3Al5O12 (YAG) crystal precipitation in nanoscale by femtosecond laser irradiation inside Al2O3-Y2O3 glass. Furthermore, we focus on the white emission by Ce: YAG in which a part of Y3+ site was replaced by Ce3+, the effect on photoluminescence (PL) characteristics by changing of ligand field induced by nanostructure formation was observed.

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Section: Photoluminescence Properties Of Ce 3+ -Doped Yttrium Aluminu...contrasting

confidence: 96%

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

et al. 2020

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“…A solid sample is levitated by an upward stream of inert gas pumping from the nuzzle. The levitated sample is heated by a high-energy laser to elevated temperature in a short time the ALT avoids heterogeneous surface nucleation induced at the container wall, making it relatively easy to obtain melt with large supercooling, such as metallic glass 7,8 ; Third, solidification kinetics and behaviors of melt can be controlled in undercooling solidification by adjusting the cooling rate of the ALT, 3,9,10 which provide insights in fabricating materials with a unique structure and excellent properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure of rapidly‐quenched ZrO₂‐SiO₂ glass‐ceramics fabricated by container‐less aerodynamic levitation technology

Wang

Sathyanath

et al. 2022

J Am Ceram Soc.

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In this work, an aerodynamic levitation technology (ALT) was utilized to prepare ZrO2‐SiO2 glass‐ceramics with two different ZrO2 contents, that is, 35 mol% and 50 mol%. The glass‐ceramics were partially melted at ∼2000°C or fully melted at ∼3000°C by ALT, followed by rapid quenching to obtain spherical glass‐ceramic beads. The phase compositions and microstructures of the glass‐ceramics were characterized. Crystallization of ZrO2 occurred during the solidification process and ZrO2 content, processing temperature, and the addition of yttrium (3 mol%) affected the crystalline phase of ZrO2. No ZrSiO4 or crystalline SiO2 were formed during the solidification process and the glass‐ceramics were away from thermodynamic equilibrium due to rapid quenching. The glass‐ceramics showed a microstructure of irregular‐shaped ZrO2 micro‐aggregates embedded in an amorphous SiO2 matrix, with lamellar twins and lattice defects formed within ZrO2 crystals. For samples prepared at ∼3000°C, a liquid‐liquid phase separation occurred in the melt, which eventually resulted in the formation of large and irregular‐shaped ZrO2 aggregates. In comparison, for samples prepared at ∼2000°C, pre‐existed ZrO2 crystals formed during heating acted as nucleation sites during the cooling process, followed by grain growth to form large ZrO2 aggregates. Solidification and microstructure formation mechanisms were proposed to elucidate the solidification process during rapid cooling and the microstructure of the glass‐ceramics obtained.

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Viscous flow spark plasma sintering of glass microspheres with YAG composition and high tendency to crystallization

Michalková¹,

Kraxner

Parchovianský

et al. 2021

Journal of the European Ceramic Society

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Microstructure of rapidly quenched YAG-based glass–ceramics prepared by aerodynamic levitation

Cited by 5 publications

References 21 publications

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

Microstructure of rapidly‐quenched ZrO₂‐SiO₂ glass‐ceramics fabricated by container‐less aerodynamic levitation technology

Viscous flow spark plasma sintering of glass microspheres with YAG composition and high tendency to crystallization

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Microstructure of rapidly quenched YAG-based glass–ceramics prepared by aerodynamic levitation

Cited by 5 publications

References 21 publications

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals

Microstructure of rapidly‐quenched ZrO2‐SiO2 glass‐ceramics fabricated by container‐less aerodynamic levitation technology

Viscous flow spark plasma sintering of glass microspheres with YAG composition and high tendency to crystallization

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Microstructure of rapidly‐quenched ZrO₂‐SiO₂ glass‐ceramics fabricated by container‐less aerodynamic levitation technology