Fabrication and spectral properties of Dy:Y2O3 transparent ceramics

Hu, Zongwen; Xu, Xiaodong; Wang, Jun; Liu, Peng; Li, Dongzhen; Wang, Xiaodan; Zhang, Jian; Tang, Dingyuan

doi:10.1016/j.jeurceramsoc.2017.12.020

Cited by 33 publications

(9 citation statements)

References 27 publications

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“…For the Dy 2 O 3 ceramics, the situation is a bit more complex and the model ( 6) cannot be used [40]. The Dy 3+ ions possess many resonance lines within the considered spectral region, as was already documented in several spectroscopic investigations of Dy 3+ -based compounds [50][51][52]. The available spectroscopic data represents an important input into the following considerations.…”

Section: Dy 2 O 3 Ceramicsmentioning

confidence: 99%

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

et al. 2020

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The relatively narrow choice of magneto-active materials that could be used to construct Faraday devices (such as rotators or isolators) for the mid-infrared wavelengths arguably represents a pressing issue that is currently limiting the development of the mid-infrared lasers. Furthermore, the knowledge of the magneto-optical properties of the yet-reported mid-infrared magneto-active materials is usually restricted to a single wavelength only. To address this issue, we have dedicated this work to a comprehensive investigation of the magneto-optical properties of both the emerging (Dy2O3 ceramics and CeF3 crystal) and established (Y3Fe5O12 crystal) mid-infrared magneto-active materials. A broadband radiation source was used in a combination with an advanced polarization-stepping method, enabling an in-depth analysis of the wavelength dependence of the investigated materials’ Faraday rotation. We were able to derive approximate models for the examined dependence, which, as we believe, may be conveniently used for designing the needed mid-infrared Faraday devices for lasers with the emission wavelengths in the 2-μm spectral region. In the case of Y3Fe5O12 crystal, the derived model may be used as a rough approximation of the material’s saturated Faraday rotation even beyond the 2-μm wavelengths.

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Section: Dy 2 O 3 Ceramicsmentioning

confidence: 99%

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

et al. 2020

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“…The 4 F 9/2 → 6 H 13/2 emission cross section ( σ em ) of Dy 3+ ions was estimated by the Füchtbauer–Ladenburg formula 39 :

\begin{equation}{\sigma _{{\rm{em}}}}(\lambda ) = \frac{{{\lambda ^4}A}}{{8\pi {n^2}c}}\frac{{\lambda I(\lambda )}}{{\int {\lambda I(\lambda )d\lambda } }}\end{equation}

where A is the radiative transition probability for Dy 3+ , and I ( λ ) is the emission intensity at λ . The emission cross sections of LuScO 3 :Dy, LuYO 3 :Dy, and YScO 3 :Dy at 573 nm were calculated to be 0.78, 1.10, and 0.76 × 10 −20 cm 2 , which are larger than that of Y 2 O 3 :Dy (0.57 × 10 −20 cm 2 ) 23 but lower than that of YAG:Dy ceramics (1.50 × 10 −20 cm 2 ) 11 . Due to the two factors of broader emission spectra and higher radiative transition probability of sesquioxide, the emission cross sections of Dy‐doped sesquioxide solid solution ceramics were lower than that of YAG:Dy ceramics 40 .…”

Section: Resultsmentioning

confidence: 91%

“…Owing to their high melting point (>2400°C), it is extremely difficult to grow sesquioxide single crystals, 19 whereas large‐size and high‐doped sesquioxide ceramics are relatively easy to prepare 20–22 . However, there were few reports on the visible spectra of Dy‐doped sesquioxide ceramics 23,24 …”

Section: Introductionmentioning

confidence: 99%

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

et al. 2022

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A comparative study of the spectroscopic properties of LuScO3:Dy, LuYO3:Dy, and YScO3:Dy was conducted to evaluate their application prospects in yellow laser generation. The absorption cross sections of Dy‐doped LuScO3, LuYO3, and YScO3 at 446 nm were calculated to be 0.67, 1.51, and 1.05 × 10−21 cm2, respectively. The Judd–Ofelt (J–O) theory was used to determine the J–O parameters as well as the spontaneous transition probability and fluorescence branching ratios. The fluorescence spectra of LuScO3:Dy, LuYO3:Dy, and YScO3:Dy were dominated by yellow emission corresponding to the 4F9/2 → 6H13/2 transition, with cross sections of 0.78, 1.10, and 0.76 × 10−20 cm2, respectively. The Inokuti–Hirayama model was applied to fit the non‐exponential decay curve of Dy‐doped sesquioxide solid solution ceramics in order to investigate the process of energy transfer. The impact of bond length and distortion degree on spectral properties and energy‐transfer parameters was investigated. It was concluded that among Dy‐doped sesquioxide solid solutions, LuYO3:Dy ceramics are the most promising materials for generating yellow lasers.

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“…It can be seen from Table 1 that the transmittances of Y 2 O 3 transparent ceramics via SPS method in the visible light band are di cult to exceed 80%, which are generally lower than the transmittances in the infrared range. The sintering temperatures to prepare Y 2 O 3 transparent ceramics with good optical properties in most cases need to exceed 1400 °C [36][37][38][39]. However, when the nanorod powders were used in the present work, transparent ceramic with a transmittance of more than 80% in the infrared band was obtained at only 1300 °C.…”

Section: Resultsmentioning

confidence: 99%

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

Huang¹,

Shi²,

Zhang³

et al. 2021

Preprint

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Herein, we report a new strategy on an improving densification in spark plasma sintering (SPS) ultrafine-grained Y2O3 transparent ceramic using anisotropic-shaped nanorod powders. At the low temperature stage (<600°C), fracture and rearrangement of nanorod powders will appear which can further improve the initial density of particle compact and reduce the initial particle size. When the temperature reaches beyond 600°C, the sintering efficiency of nanorod powder compact will exceed that of the green body packed by spherical powders. The ceramic sample sintered at 1300°C from nanorods is transparent with ultra-fine grain and shows good optical and mechanical properties, while the corresponding ceramic from near-spherical nanocrystalline powders is not dense enough and opaque.

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Fabrication and spectral properties of Dy:Y2O3 transparent ceramics

Cited by 33 publications

References 27 publications

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

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Fabrication and spectral properties of Dy:Y2O3 transparent ceramics

Cited by 33 publications

References 27 publications

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths

Comparative spectroscopic investigation of Dy3+ ions in different sesquioxide solid solution ceramics

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

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Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics