Laser enhanced diffusion of nitrogen in high purity semi-insulating 4H silicon carbide substrates for non-rectifying contact formation to photoconductive semiconductor switches

2011 ◽  
Author(s):  
W. Sullivan ◽  
C. Hettler ◽  
J. Dickens
Keyword(s):  
Silicon Carbide ◽  
High Purity ◽  
Enhanced Diffusion ◽  
Contact Formation ◽  
Semiconductor Switches

scholarly journals Magnetic properties of the natural and isotope-modified diamond and silicon carbide

2018 ◽  
Vol 185 ◽  
pp. 04007 ◽  
Author(s):  
A.N. Taldenkov ◽  
A.V. Inyushkin ◽  
E.A. Chistotina ◽  
V.G. Ralchenko ◽  
A.P. Bolshakov ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Magnetic Properties ◽  
Isotopic Composition ◽  
Single Crystals ◽  
High Purity ◽  
Diamagnetic Susceptibility ◽  
Synthetic Diamond ◽  
Paramagnetic Centers ◽  
Natural Isotopic Composition ◽  
Ferromagnetic Component

The magnetic properties of single crystals of synthetic diamond and crystals of silicon carbide were studied. High-purity samples of diamonds synthesized with HPHT and CVD technologies were used. The crystals of silicon carbide were grown by sublimation and industrial technology. Along with samples with a natural isotopic composition, monoisotopic crystals of diamond (99.96% 12C and 99.96% 13C) and silicon carbide (99.993% of 28Si) were studied. On the basis of the data obtained, the diamagnetic susceptibility was determined and the concentration of paramagnetic centers and the content of the ferromagnetic component were evaluated. The results are discussed.

Laser-enhanced diffusion of nitrogen and aluminum dopants in silicon carbide

2006 ◽  
Vol 54 (16) ◽  
pp. 4273-4283 ◽  
Author(s):  
Z. Tian ◽  
N.R. Quick ◽  
A. Kar
Keyword(s):  
Silicon Carbide ◽  
Enhanced Diffusion

scholarly journals Determination of trace metals in high purity silica, silicon nitride and silicon carbide by ICP-AES after separation with mini-column chelating resin.

1990 ◽  
Vol 39 (6) ◽  
pp. T83-T87 ◽  
Author(s):  
Hiroyasu YOSHIKAWA ◽  
Youichi ISHIBASHI ◽  
Naoki GUNJI ◽  
Kouichi SASAYAMA ◽  
Takeshi MISUMI
Keyword(s):  
Silicon Carbide ◽  
Silicon Nitride ◽  
Trace Metals ◽  
High Purity ◽  
Chelating Resin

scholarly journals Synthesis of Silicon Carbide Powders from Methyl-Modified Silica Aerogels

2020 ◽  
Vol 10 (18) ◽  
pp. 6161
Author(s):  
Kyoung-Jin Lee ◽  
Yanggu Kang ◽  
Young Hun Kim ◽  
Se Won Baek ◽  
Haejin Hwang
Keyword(s):  
Silicon Carbide ◽  
High Purity ◽  
Silica Aerogel ◽  
Carbothermal Reduction ◽  
Single Phase ◽  
Phase Evolution ◽  
Silica Aerogels ◽  
Methyl Groups ◽  
Modified Silica ◽  
Lower Temperature

β-silicon carbide (SiC) powders were synthesized by the carbothermal reduction of methyl-modified silica aerogel/carbon mixtures. The correlations between the phase evolution and morphologies of the SiC powders and the C/SiO2 ratio were investigated. At a C/SiO2 ratio of 3, β-SiC formed at 1425 °C and single-phase SiC powders were obtained at 1525 °C. The methyl groups (-CH3) on the silica aerogel surfaces played important roles in the formation of SiC during the carbothermal reduction. SiC could be synthesized from the silica aerogel/carbon mixtures under lower temperature and C/SiO2 ratios than those needed for quartz or hydrophilic silica. The morphology of the SiC powder depended on the C/SiO2 ratio. A low C/SiO2 ratio resulted in β-SiC powder with spherical morphology, while agglomerates consisting of fine SiC particles were obtained at the C/SiO2 ratio of 3. High-purity SiC powder (99.95%) could be obtained with C/SiO2 = 0.5 and 3 at 1525 °C for 5 h.

Clean and low-cost synthesis of high purity beta-silicon carbide with carbon fiber production residual and a sandstone

2019 ◽  
Vol 238 ◽  
pp. 117875 ◽  
Author(s):  
Kaidi Sun ◽  
Tongtong Wang ◽  
Zhe Chen ◽  
Wenyang Lu ◽  
Xin He ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Carbon Fiber ◽  
High Purity ◽  
Low Cost ◽  
Fiber Production
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