Crystal growth, structure and optical properties of a new acentric crystal La2Al4.68B8O22 with a short UV absorption edge

2016 ◽  
Vol 40 (6) ◽  
pp. 4870-4873 ◽  
Author(s):  
Shu Guo ◽  
Lijuan Liu ◽  
Mingjun Xia ◽  
Xiaoyang Wang ◽  
Lei Bai ◽  
...  
Keyword(s):  
Optical Properties ◽  
Crystal Growth ◽  
Absorption Edge ◽  
Uv Absorption ◽  
Solution Growth ◽  
Growth Structure ◽  
Growth Method ◽  
193 Nm ◽  
Top Seeded Solution Growth

A new acentric borate La2Al4.68B8O22 crystal, grown using the top seeded solution growth method, shows a short absorption edge at 193 nm.

Bulk 3C-SiC Crystal by Top Seeded Solution Growth Method

2013 ◽  
Vol 740-742 ◽  
pp. 311-314 ◽  
Author(s):  
Kazuaki Seki ◽  
S. Harada ◽  
Toru Ujihara
Keyword(s):  
Crystal Growth ◽  
Growth Rates ◽  
Solution Growth ◽  
High Quality ◽  
Preferential Growth ◽  
Bulk Crystal Growth ◽  
Seed Crystals ◽  
Growth Method ◽  
The Difference ◽  
Top Seeded Solution Growth

In this paper, we review our researches on the high-quality 3C-SiC bulk crystal growth. The polytype control and the suppression of defects are essential in the growth 3C-SiC on hexagonal SiC seed crystals. The growth polytype of SiC is usually controlled by the inheritance of the seed crystal. In contrast, we established kinetic polytype control in which the preferential growth of 3C-SiC can be achieved by the difference in the growth rates depending on supersaturation for the polytypes. In the growth of 3C-SiC, double positioning boundaries (DPBs) are often formed by the existence of twinned domain. The elimination of DPBs can be achieved utilizing the anisotropy of the step advance velocity.

Optimization of fluxes for Yb3+:YMgB5O10 crystal growth and intense multi-wavelength emission characteristics in spectra and laser performances

2021 ◽  
Author(s):  
Shijia Sun ◽  
Bing-Xuan Li ◽  
Fei Lou ◽  
Xingjun Shi ◽  
Weidong Chen ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Solution Growth ◽  
Crystalline Quality ◽  
Emission Characteristics ◽  
Multi Wavelength ◽  
Growth Method ◽  
Wavelength Emission ◽  
Top Seeded Solution Growth

Yb3+-doped YMgB5O10 (Yb:YMB) crystals with better crystalline quality were grown successfully using the optimized flux of Li2O-B2O3-LiF instead of traditional K2O3-MoO3 flux by the top-seeded solution growth method. The systematic...

Crystal growth of Bi2Sr2CaCu2O8 by the top-seeded solution-growth method

1993 ◽  
Vol 215 (3-4) ◽  
pp. 407-410 ◽  
Author(s):  
Kunihiko Oka ◽  
Tae-Su Han ◽  
Dong-Han Ha ◽  
Fumitoshi Iga ◽  
Hiromi Unoki
Keyword(s):  
Crystal Growth ◽  
Solution Growth ◽  
Growth Method ◽  
Top Seeded Solution Growth

Crystal growth of PbTiO3 by the top-seeded solution-growth method

1996 ◽  
Vol 166 (1-4) ◽  
pp. 380-383 ◽  
Author(s):  
Kunihiko Oka ◽  
Hiromi Unoki ◽  
Hirotaka Yamaguchi ◽  
Hirofumi Takahashi
Keyword(s):  
Crystal Growth ◽  
Solution Growth ◽  
Growth Method ◽  
Top Seeded Solution Growth

YMgB5O10 crystal preparation and attractive multi-wavelength emission characteristics of doping Nd3+ ions

2021 ◽  
Author(s):  
Shijia Sun ◽  
Qi Wei ◽  
Bing-Xuan Li ◽  
Xingjun Shi ◽  
feifei yuan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Transmission Spectrum ◽  
Systematic Investigation ◽  
Solution Growth ◽  
Emission Characteristics ◽  
Multi Wavelength ◽  
Growth Method ◽  
Wavelength Emission ◽  
Spectrum Band ◽  
Top Seeded Solution Growth

The pure and Nd3+-doped YMgB5O10 (YMB, Nd:YMB) crystals were grown successfully by the top-seeded solution growth method with composite fluxes Li2O-B2O3-LiF. The systematic investigation of crystal structure, transmission spectrum, band...

Influence of doping on crystal growth, structure and optical properties of nanocrystalline CaTiO3: a case study using small-angle neutron scattering

2015 ◽  
Vol 48 (3) ◽  
pp. 836-843 ◽  
Author(s):  
Oindrila Mondal ◽  
Manisha Pal ◽  
Ripandeep Singh ◽  
Debasis Sen ◽  
Subhasish Mazumder ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Crystal Growth ◽  
Small Angle Neutron Scattering ◽  
Ionic Radius ◽  
Ionic Radii ◽  
Growth Structure ◽  
Transmission Electron ◽  
The Difference

The effect of dopant size (ionic radius) on the crystal growth, structure and optical properties of nanocrystalline calcium titanate, CaTiO3(CTO), have been studied using small-angle neutron scattering. X-ray diffraction, along with high-resolution transmission electron microscopy, confirms the growth of pure nanocrystalline CTO. Rietveld analysis reveals that the difference of ionic radii between dopant and host ions induces strain within the lattice, which significantly affects the lattice parameters. The induced strain, due to the difference of ionic radii, causes the shrinkage of the optical band gap, which is manifested by the redshift of the absorbance band. Mesoscopic structural analysis using scattering techniques demonstrates that the ionic radius of the dopant influences the agglomeration behaviour and particle size. A high-resolution transmission electron microscopy study reconfirms the formation of pure highly crystalline CTO nanoparticles.

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