Results 201 to 210 of about 7,016 (252)

The evolution and modelling of the Czochralski growth technique

Journal of Crystal Growth, 1987
Abstract The historical development of Czochralski growth is briefly outlined and the importance of process modelling to the further extension of the technique is discussed. Milestones in the evolution of process modelling are noted and work in the author's laboratory on transfer function determination is outlined.
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Bolometric molybdate crystals grown by low-thermal-gradient Czochralski technique

Journal of Crystal Growth, 2019
Abstract Alkaline molybdate crystals are proved to be promising bolometric materials for rare events study, particularly, for neutrinoless double-beta decay search. In addition to high molybdenum ratio, Li 2 MoO 4 and Na 2 Mo 2 O 7 crystals exhibit ultra-low radiation background, luminescence at low temperatures, considerable light yield and high ...
Veronika D. Grigorieva, Vladimir N. Shlegel, Yuri A. Borovlev, Alexey A. Ryadun, Tatyana B. Bekker   +4 more
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Application of Czochralski Crystal‐Pulling Technique to High‐Melting Oxides

Journal of the American Ceramic Society, 1962
The Czochralski technique of pulling from the melt has been extensively used in the field of semiconductors. The criteria for its applicability are discussed and indicate that this technique should also be applicable to some of the high‐melting ceramic oxides and oxide compounds.
K. NASSAU, A. M. BROYER
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Single crystal growth of Si1 − Ge by the Czochralski technique

Journal of Crystal Growth, 1996
(111)- and (100)-Si 1-x Ge x single crystals (0 < x < 0.1) with diameters of up to 48 mm were grown by Czochralski technique using a crystal pullet with resistance heating. An automated control system based on crystal weighing has been developed. Software provides feedback control as well as the program changes of some process parameters to optimize ...
N.V. Abrosimov, S.N. Rossolenko, V. Alex, A. Gerhardt, W. Schröder   +4 more
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A spectral multidomain technique for the computation of the czochralski melt configuration

International Journal of Numerical Methods for Heat & Fluid Flow, 1996
This paper presents a spectral multidomain method for solving the Navier‐Stokes equations in the vorticity‐stream function formulation. The algorithm is based on an extensive use of the influence matrix technique and so leads to a direct method without any iterative process.
Raspo, I., Ouazzani, J., Peyret, R.
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Control of diameter in Czochralski and related crystal growth techniques

Journal of Crystal Growth, 1977
Abstract The various published methods for the automatic control of the diameter of crystals growing by the Czochralski technique are critically reviewed. The form of the meniscus in Czochralski growth is described and it is argued that the most successful servo-control techniques are those which sense changes in meniscus shape rather than changes in
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Microstructural characterisation of Terfenol-D crystals prepared by the Czochralski technique

Journal of Crystal Growth, 1997
Crystal boules of the magnetostrictive compound Terfenol-D have been grown from nominal compositions of Tb0.27Dy0.73Fey and Tb0.3Dy0.7Fey (y = 1.9, 1.95) by the Czochralski technique using an induction-heated cold crucible. Microstructural characterisation of cross-sections of the boules reveal large equiaxed grains with primary growth directions close
Y.J. Bi, J.S. Abell
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Single crystal growth by axial vibrational control technique in Czochralski configuration

Journal of Crystal Growth, 2011
Abstract Application of the axial vibration control technique to the Czochralski crystal growth (AVC–CZ) by submerging an oscillating baffle into the melt under the crystal for the large diameter crystal growth was studied. The configuration of the submerged vibrating baffle was optimized to enlarge the growing crystal diameter while keeping control ...
I.Ch. Avetissov, A.P. Sadovskii, E.A. Sukhanova, E.V. Zharikov   +3 more
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Marangoni convection in the LiCaAIF6 crystal growth by the Czochralski technique

Journal of Thermal Science, 2002
Numerical simulation of the mixed convection induced by buoyancy, crystal rotation, and also unbalanced surface tension at the melt-gas interface is conducted by means of the finite volume method in the model of the Czochralski crystal growth. The role of Marangoni convection in the heat and mass transfer is investigated by the comparison of the models
Zhong Zeng, Jingqiu Chen, Hiroshi Mizuseki, Touetsu Shishido, Kyoko Ichinoseki, Yoshiyuki Kawazoe   +5 more
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X‐Ray Imaging Technique for Observing Liquid Encapsulation Czochralski Crystal Growth

Journal of The Electrochemical Society, 1974
An imaging technique has been developed to facilitate growth of uniform diameter crystals by the liquid encapsulation Czochralski method. A point source of x‐rays is used to produce a shadow image of the growing crystal on a scintillation screen. A high‐sensitivity TV camera converts the shadow image into a real‐time display on a TV monitor.
H. D. Pruett, S. Y. Lien
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