نتایج جستجو برای: czochralski technique

تعداد نتایج: 611832  

Journal: :Journal of Applied Physics 2022

The present Tutorial provides a description of the growth bulk β-Ga2O3 single crystals by Czochralski method with focus on critical aspects. In particular, it details thermodynamics Ga2O3 as key factor for crystal along comprehensive solutions that are essential size scale-up. Also, free carrier absorption is discussed, has great impact stability. direction and intentional doping, important fac...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه دریانوردی و علوم دریایی چابهار - دانشکده ادبیات و زبانهای خارجی 1390

abstract cooperative learning refers to small groups of learners working together as a team to solve a problem, complete a task, or accomplish a common goal. in a cooperative environment one’s success is directly related to the success of other members because the focus on the individual shifts towards the group. to test the effectiveness of the method, using jigsaw technique, a study was cond...

Journal: : 2021

The work is devoted to the creation of a virtual instrument in LabVIEW environment, which makes it possible simulate process growing crystal depending on technological parameters. As under consideration, we chose method single crystals by pulling them up from spare surface large volume melt with initiation onset crystallization introducing seed (or several crystals) given structure and crystall...

Journal: :Chinese Optics Letters 2022

Four single crystals (Yb0.15Lu0.85xY0.85-0.85x)3Al5O12 (x = 0, 0.25, 0.5, 1) were grown by the Czochralski method. The correlation of host atom Lu:Y ratios with density and luminescence properties revealed. increases linearly increasing Lu3+ content, which will improve gamma ray cut-off ability. integrated intensity X-ray excited spectrum exponentially Y:Lu ratio, while decay time becomes even ...

2017
Wolfram Miller Klaus Böttcher Zbigniew Galazka Jürgen Schreuer

Our numerical modelling of the Czochralski growth of single crystalline β-Ga2O3 crystals (monoclinic symmetry) starts at the 2D heat transport analysis within the crystal growth furnace, proceeds with the 3D heat transport and fluid flow analysis in the crystal-melt-crucible arrangement and targets the 3D thermal stress analysis within the β-Ga2O3 crystal. In order to perform the stress analysi...

2002
A Giannattasio S Senkader R J Falster P R Wilshaw

Critical stresses necessary to generate dislocation glide loops in Czochralski silicon containing oxide precipitates have been investigated. Using three-point bending and etching techniques, it was possible to determine the minimum shear stress required to generate dislocation glide loops from controlled distribution of precipitates under constant-stress conditions. The generation of glide disl...

2016
Thomas A. Lograsso A. R. Ross Dwight W. Delaney D. W. DELANEY

The phase equilibria of the Al-Cu-Fe quasicrystalline phase (y phase) is complex and conventional crystal growth techniques like the Bridgman and Czochralski methods are not applicable in preparation of large crystals. Large single grains of the y phase been have prepared by either slow cooling or isothermal anneals. In the later technique, arc melted ingots were subjected to either single or m...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید