Optical Materials Express
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2018
·Vol. 8
·期 7
·1754-1761
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IF 2.566
Yantao Xu,Xusheng Xiao,Xiaoxia Cui,Fei Gao,Jian Cui,Xiaogang Liu,Haitao Guo,Jiangbo She,Gang Chen,Min Lu,Bo Peng
The diamagnetic performance of GeS2-Ga2S3 and GeS2-Ga2S3-PbI2 chalcogenide glasses were investigated, and the composition, wavelength and temperature dependences of the Verdet constant were discussed in detail. It indicates that the contributions to the Verdet constant for each kind of ion are in the order of VPb>VGa>VGe in these chalcogenide glasses, and the Becquerel rule is proved to be an effective guidance for predicting the Verdet constant value. A large Verdet constant is obtained in 68GeS2·17Ga2S3·15PbI2 composition glass and the value is 0.230 min·G−1·cm−1 at 635nm, which is greatly larger than those of commercial diamagnetic glasses. Besides, the temperature coefficient of Verdet constant can be regarded as a constant between 278 and 368 K, indicating these chalcogenide glasses are good candidates for magneto-optical devices in temperature instability conditions.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
SCRIPTA MATERIALIA
·
2018
·
IF 4.163
Jiawei Dai,Yubai Pan,Tengfei Xie,Huamin Kou,Jiang Li
A novel magneto-optical material, (Tb 0.995 Ho 0.005 ) 3 Al 5 O 12 transparent ceramic, was successfully fabricated using co-precipitated powders. The prepared (Tb 0.995 Ho 0.005 ) 3 Al 5 O 12 ceramic exhibits outstanding optical quality and magneto-optical property. For the (Tb 0.995 Ho 0.005 ) 3 Al 5 O 12 ceramic pre-sintered at 1650 °C for 20 h with HIP post-treatment at 1700 °C for 3 h, the optical transmittance exceeds 80% in the 500–1500 nm region (except for the absorption bands). The Verdet constant of the sample at 633 nm is about 1.4 times higher than that of the commercial Tb 3 Ga 5 O 12 single crystal . High transparency and Verdet constant make it an attractive magneto-optical material for the high-power Faraday isolators.
研究领域:
材料科学
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光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2015
·Vol. 98
·期 6
·1714-1716
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IF 2.61
Song Hu,Xianpeng Qin,Chunhua Lu,Guohong Zhou,Zhongzi Xu,Shiwei Wang
Polycrystalline, transparent Dy 3 Al 5 O 12 ceramics were firstly fabricated by a solid-state reaction method using high-purity Dy 2 O 3 and Al 2 O 3 powders. The fully dense Dy 3 Al 5 O 12 ceramic with an average grain size of less than 10 μm was obtained by vacuum sintering at 1820°C for 6 h. The in-line transmittance of the optimized sample reaches 80% in the visible region. Scanning electron microscopy reveals that no secondary phases and almost no pores are observed at grain boundaries or triple junctions, and the fracture mode of the ceramic is mainly transgranular. The Dy 3 Al 5 O 12 ceramic is promising for magneto-optical applications. Verdet constant of the Dy 3 Al 5 O 12 transparent ceramic is as high as −0.41 min·(Oe·cm) −1 .
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 10
·5965-5974
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IF 3.9
Rui Zhang,Nan Zhang,Qi Luo,Yiheng Wu,Guiqing Feng,Fang Wang,Yuxia Li,Shuaihua Wang,Shaofan Wu
Currently, Faraday isolators and rotators for high-power lasers are popular research topics; therefore, finding magneto-optical materials with excellent Verdet constants and thermal properties is crucial. In this study, novel holmium scandium aluminum garnet (HoSAG) magneto-optical ceramics were fabricated using vacuum sintering. This study improved the traditional ball milling method and pre-synthesized powders with great sinterability after secondary ball milling and sieving. Different pre-synthesis temperatures were found to have significant effects on the particle size and micromorphology of the synthesized powders. HoSAG ceramics with 0.05 wt% MgO sintering aid and held at 1700°C for 30 h reached a transmittance of 76.7% at 1550 nm. Meanwhile, HoSAG transparent ceramics maintain higher transmittance in the infrared region (>1500 nm) than terbium gallium garnet (TGG) crystals, indicating better application prospects. The Verdet constants of HoSAG magneto-optical ceramics at 405, 532, 808, and 1064 nm were −421.5, −181.2, −65, and −32.3 rad T −1 m −1 , respectively, which are slightly less than those of TGG magneto-optical ceramics. Moreover, the thermal conductivity of HoSAG ceramics at 300.00 K was 4.89 W m −1 K −1 , which is comparable to that of the TGG ceramics.
研究领域:
材料科学
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光学工程
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无机非金属材料
·
功能陶瓷
·
激光技术
✓ 已验证
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·
IF 1.8
Mengyao Wang,Bin Lu,Bo You,Ruijie Pei,Zhigang Sun,Ji-Guang Li,Yoshio Sakka,Naifeng Zhuang
The nickel element doped holmium oxide (Ho 2 O 3 :Ni) transparent magneto-optical ceramics were fabricated by vacuum sintering and the dopant impacts on structure features and Faraday effects were investigated. The starting oxide powders were synthesized by pyrolyzing the resulting layered holmium-based hydroxide nanosheets prepared from a chemical precipitation route using the sodium hydroxide as precipitant at the freezing temperature. Upon high-temperature sintering, the Ni i • • ${\mathrm{Ni}}_i^{ \bullet \bullet }$ defect is introduced by Ni 2+ substitution for Ho 3+ to form the interstitial solid solution. The 1 at.% Ni 2+ doped Ho 2 O 3 ceramic sample exhibits an in-line transmittance of ∼70.04% at 1 550 nm with a relative density of ∼99.88%, while more Ni 2+ incorporation (e.g., 2‒5 at.%) even leads to a completely opaque state. The magneto-optical transparent Ho 2 O 3 :1%Ni ceramic developed in this work has Verdet constants of ∼−195, −65, and −29 rad/(T·m) at 635, 1 064, and 1 550 nm, respectively, which are ∼1.8-fold higher than the commercial terbium gallium garnet crystal or ∼1.4-fold higher than the pure Ho 2 O 3 ceramic. This material also possesses relatively large figure of merit of ∼14.6°/T at 1 064 nm and relatively high thermal conductivity of ∼7.5 W/(m·K) at room temperature.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
Magnetochemistry
·
2020
·Vol. 7
·期 1
·6
·
IF 1.947
Dianjun Hu,Xin Liu,Ziyu Liu,Xiaoying Li,Feng Tian,Danyang Zhu,Zhaoxiang Yang,Lexiang Wu,Jiang Li
As a kind of promising material for a Faraday isolator used in the visible and near infrared range, Dy2O3transparent ceramics were prepared by vacuum sintering from the nano-powders synthesized by the liquid precipitation method using ammonium hydrogen carbonate as precipitant with no sintering aids. The synthesized precursor was calcinated at 950 °C–1150 °C for 4 h in air. The influences of the calcination temperature on the morphologies and phase composition of Dy2O3powders were characterized. It is found that the Dy2O3powder calcinated at 1000 °C for 4 h is superior for the fabrication of Dy2O3ceramics. The Dy2O3transparent ceramic sample prepared by vacuum sintering at 1850 °C for 10 h, and subsequently with air annealing at 1400 °C for 10 h, from the 1000 °C-calcined Dy2O3powders, presents the best optical quality. The values of in-line transmittance of the optimal ceramic specimen with the thickness of 1.0 mm are 75.3% at 2000 nm and 67.9% at 633 nm. The Verdet constant of Dy2O3ceramics was measured to be −325.3 ± 1.9 rad/(T·m) at 633 nm, about 2.4 times larger than that of TGG (Tb3Ga5O12) single crystals.Keywords:Dy2O3transparent ceramics;liquid precipitation method;calcination temperature;isostatic pressing;vacuum sintering;Verdet constant
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）