Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Responsive to liquid level
Patent
1984-07-25
1986-06-03
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Responsive to liquid level
422108, 422249, 156601, 156617SP, 156DIG80, C30B 1520
Patent
active
045928959
ABSTRACT:
A single crystal pulling system including a single crystal pulling apparatus, an electromagnet, and an electromagnet moving mechanism, wherein the single crystal pulling apparatus pulls a seed crystal from a single crystal material melt contained in a crucible at a specified constant speed. The electromagnet is disposed at the outer periphery of the crucible so as to apply a predetermined required strength of magnetic field to the crystal-melt interface of the melt. The magnet moving mechanism moves the electromagnet in a vertical direction with respect to the crucible as the level of the crystal-melt interface is lowered during seed growth so that a predetermined required strength of magnetic field is always applied to the crystal-melt interface.
REFERENCES:
patent: 3291650 (1966-12-01), Dohmen et al.
patent: 3882319 (1975-05-01), Clement et al.
patent: 3998598 (1976-12-01), Bonora
Charles Cohen, Magnetic Field Breeds Skylab-Like Semiconductors, Electronics, Jul. 3, 1980, pp. 83-84.
Japanese Journal of Applied Physics, vol. 22, No. 6, Jun., 1983, pp. L325-L327, "Electrical Resistivity of Undoped GaAs Single Crystals Grown by Magnetic Field Applied LEC Technique", Kazutaka Terashima et al.
Electrochemical Society Meeting, vol. 83-1, Abstract No. 326, May 1983 "Growth and Characterization of Undoped GaAs Single Crystals by a Transverse Magnetic Field Applied LEC Technique", K. Terashima and T. Fukuda.
Nikkei Electronics, 1980, pp. 154-176.
Matsutani Kinya
Sasaki Katsutoki
Kabushiki Kaisha Toshiba
Lacey David L.
LandOfFree
Single crystal pulling system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single crystal pulling system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single crystal pulling system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1232102