نتایج جستجو برای: czochralski
تعداد نتایج: 542 فیلتر نتایج به سال:
We have irradiated Czochralski silicon (Cz-Si) and Float Zone silicon (Fz-Si) detectors with 24GeV=c and 10MeV protons. Samples were characterized with Capacitance-Voltage measurements (CV), Transient Current Technique (TCT) and secondary electron backscattering recorded by Scanning Electron Microscope (SEM). We present the evolution of the effective doping concentration as a function of irradi...
A recent numerical approach for the study of three-dimensional instabilities of axisymmetric melt flows in Czochralski crucible is described. The convergence studies and comparisons with previously published experimental and numerical data are reported. Convergence requirements are estimated. Basing on a certain experimental configuration we give an example of the stability diagram which shows ...
We present our recent advances in the use of pulsed laser deposition (PLD) to fabricate active gain elements for use as amplifiers and laser oscillators. Record output powers exceeding 16 W and slope efficiencies of 70% are reported for optimized epitaxial growth of Yb(7.5%):YAG on to YAG substrates. We show for the first time that the performance of PLD material can meet or even exceed that of...
2014 We present results concerning sample dependence of not only the modulation wave vector, but also of the amplitude of the order parameter describing the N (A21am) ~ incommensurate phase transition in BaMnF4: X-ray diffraction, Cp (« DSC »), and birefringence measurements were performed on a wide set of crystals which were synthetized by Bridgman, Czochralski, and hydrothermal methods. The e...
Abstract. In this paper we present a model for computing thermal stress inside a crystal with facets. Using a systematical perturbation analysis, a semi-analytical thermal stress solution is obtained for constrained directional growth with small lateral heat flux. Our solution can be applied to crystals grown by various growth techniques such as the Czochralski method. The semianalytical nature...
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