Light scattering by composition inhomogeneity and residual pores in LiAlON solid solution transparent ceramics

2019 ◽  
Vol 45 (16) ◽  
pp. 21029-21033 ◽  
Author(s):  
Yuezhong Wang ◽  
Rongshi Zhang ◽  
Jiahuan He ◽  
Meng Tian ◽  
Tong Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Light Scattering ◽  
Transparent Ceramics ◽  
Composition Inhomogeneity

Light scattering by pores in YAG transparent ceramics simulated by DDA model

2020 ◽  
Vol 104 (1) ◽  
pp. 256-262
Author(s):  
Yao Yang ◽  
Nannan Ma ◽  
Junjing Duan ◽  
Jianqi Qi ◽  
Yiding Zhao ◽  
...  
Keyword(s):  
Light Scattering ◽  
Transparent Ceramics

Light Scattering Properties for PLZT Transparent Ceramics of Different Zr/Ti Ratios

2012 ◽  
Vol 512-515 ◽  
pp. 1537-1540 ◽  
Author(s):  
Bin Xia ◽  
Xi Yun He ◽  
Xin Sen Zheng ◽  
Ping Sun Qiu ◽  
Wen Xiu Cheng ◽  
...  
Keyword(s):  
Light Scattering ◽  
Near Infrared ◽  
Contrast Ratio ◽  
Hysteresis Loops ◽  
Transparent Ceramics ◽  
Optical Modulators ◽  
Lead Lanthanum Zirconate Titanate ◽  
Pressing Method ◽  
Antiferroelectric Phase ◽  
Diffraction Patterns

Lead lanthanum zirconate titanate (PLZT) transparent ceramics present an attractive electrically controlled light scattering performance with high transmittance and large contrast ratio. PLZT ceramics of 8 mole% lanthanum with different Zr/Ti ratios (Zr/Ti=68/32, 70/30, 72/28) were prepared by the hot pressing method to figure out the influence of Zr/Ti ratios to the light scattering performance. X-ray diffraction patterns confirm that all the samples are perovskite structure with no secondary impurity phase detected. All the three compositions show double tending slim hysteresis loops which due to antiferroelectric phase coexisted. Besides, within the range of near-infrared to ultraviolet wavelength, all the PLZT samples show high transmittance. While the Zr/Ti ratio increasing from 68/32 to 72/28, the transmittance reduced value RT of the sample decreases gradually (λ: 632.8 nm). PLZT (8/68/32) sample shows a maximum RT, it promises a good application in optical modulators, goggles and so on.

The electrically controlled light scattering performances of PLZT transparent ceramics

2015 ◽  
Vol 41 ◽  
pp. S246-S249 ◽  
Author(s):  
Bin Xia ◽  
Xiyun He ◽  
Dazhi Sun ◽  
Wenxiu Cheng ◽  
Pingsun Qiu ◽  
...  
Keyword(s):  
Light Scattering ◽  
Transparent Ceramics

Optical, Thermal, and Mechanical Properties of (Y1-xScx)2O3 Transparent Ceramics

2021 ◽  
Author(s):  
Jiquan Huang ◽  
Changliang YANG ◽  
Qiufeng HUANG ◽  
Zhonghua DENG ◽  
Yun WANG ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Transparent Ceramics ◽  
Sintering Process ◽  
Vacuum Sintering ◽  
Solid Solution Strengthening ◽  
Complete Solid Solution ◽  
Wide Wavelength Range ◽  
Universal Approach ◽  
Solution Strengthening

Abstract Sesquioxides such as Y2O3 and Sc2O3 are important optical materials, but the fabrication of their transparent ceramics remains a challenge due to the ultra-high melting point of over 2400 oC. In this work, a series of (Y1-xScx)2O3 transparent ceramics were successfully fabricated by a simple vacuum sintering process without any sintering additives, and the effect of Scandium (Sc) content on the crystal structure and optical/thermal/mechanical properties were evaluated. Y2O3 and Sc2O3 form a complete solid solution with a cubic bixbyite structure. The formation of (Y1-xScx)2O3 solid solution promotes the densification of ceramics, leading to the realization of high transparency close to the theoretical transmittance over a wide wavelength range of 0.35-8 mm. In particular, the in-line transmittance in the range of 0.6-6 mm remains above 80% for (Y1-xScx)2O3 with x = 0.23-0.31, while the pristine Y2O3 and Sc2O3 are opaque. Moreover, the mechanical properties including Vickers hardness (Hv), fracture toughness (KIC), and biaxial strength (δb) are evidently enhanced due to the solid solution strengthening, while the thermal conductivity is reduced due to the reduction of photon free path. This study demonstrates that forming of solid solution is a facile and universal approach for preparing sesquioxides transparent ceramics with high optical and mechanical quality.

Composition inhomogeneity and structural defects in Czochralski grown Ge x Si1 − x solid solution crystals

2007 ◽  
Vol 33 (6) ◽  
pp. 512-516 ◽  
Author(s):  
L. M. Sorokin ◽  
T. S. Argunova ◽  
N. V. Abrosimov ◽  
M. Yu. Gutkin ◽  
A. G. Zabrodskiĭ ◽  
...  
Keyword(s):  
Solid Solution ◽  
Structural Defects ◽  
Composition Inhomogeneity

Electrically induced light scattering performances of lanthanum-modified lead zirconate titanate transparent ceramics

2012 ◽  
Vol 29 (3) ◽  
pp. 192-197 ◽  
Author(s):  
Bin Xia ◽  
Xiyun He ◽  
Xinsen Zheng ◽  
Pingsun Qiu ◽  
Wenxiu Cheng ◽  
...  
Keyword(s):  
Light Scattering ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Transparent Ceramics ◽  
Zirconate Titanate

Photochromism‐induced light scattering and photoswithing in Er doped (K,Na)NbO 3 transparent ceramics

2019 ◽  
Vol 102 (11) ◽  
pp. 6732-6740 ◽  
Author(s):  
Haiqin Sun ◽  
Yang Lv ◽  
Yan Zhu ◽  
Jinfeng Lin ◽  
Xiao Wu ◽  
...  
Keyword(s):  
Light Scattering ◽  
Transparent Ceramics ◽  
Er Doped
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