EA200200655A1 - METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN - Google Patents

METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN

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Publication number
EA200200655A1
EA200200655A1 EA200200655A EA200200655A EA200200655A1 EA 200200655 A1 EA200200655 A1 EA 200200655A1 EA 200200655 A EA200200655 A EA 200200655A EA 200200655 A EA200200655 A EA 200200655A EA 200200655 A1 EA200200655 A1 EA 200200655A1
Authority
EA
Eurasian Patent Office
Prior art keywords
prism
crucible
seed crystal
crystal
parallel
Prior art date
Application number
EA200200655A
Other languages
Russian (ru)
Other versions
EA003419B1 (en
Inventor
Николай Иванович Блецкан
Original Assignee
Закрытое Акционерное Общество Научно-Производственное Объединение "Корунд"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Закрытое Акционерное Общество Научно-Производственное Объединение "Корунд" filed Critical Закрытое Акционерное Общество Научно-Производственное Объединение "Корунд"
Priority to EA200200655A priority Critical patent/EA200200655A1/en
Publication of EA003419B1 publication Critical patent/EA003419B1/en
Publication of EA200200655A1 publication Critical patent/EA200200655A1/en

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Abstract

Способ выращивания монокристаллов сапфира, включающий получение расплава исходного материала в тигле, введение в контакт с расплавом затравочного кристалла сапфира, управление скоростью подъема последнего, регулирование температурного поля расплава, причем выращивание осуществляют в объеме призмы, соосной затравочному кристаллу, причем грани призмы параллельны кристаллографическим граням последнего; используют затравочный кристалл в виде прямоугольной призмы, ориентированной в направлении <1010>, боковые грани которой совпадают с плоскостями {0001} и, а выращивание монокристалла производят в объеме прямоугольной призмы, составляющим 0,65-0,7 рабочего объема тигля, причём две боковые грани этой призмы параллельны плоскости {0001}, а две другие - плоскостизатравочного кристалла; устройство для выращивания монокристаллов сапфира, содержащее установленные в вакуумной камере экраны, нагреватель, тигель с формообразователем, затравкодержатель с закрепленным в нем затравочным кристаллом сапфира, системы регулирования скорости подъема затравочного кристалла и мощности нагревателя, причем формообразователь выполнен в виде соосной затравочному кристаллу призмы, грани которой параллельны кристаллографическим граням последнего; при использовании затравочного кристалла в виде прямоугольной призмы, ориентированной в направлении <1919>, боковые грани которой совпадают с плоскостями {0001} и, формообразователь выполнен в виде прямоугольной призмы, объем которой составляет 0,65-0,7 рабочего объема тигля, причём две боковые грани формообразователя параллельны плоскости {0001}, а две другие - плоскостизатравочного кристалла; тигель с нагревателемA method of growing sapphire single crystals, including obtaining a melt of the starting material in a crucible, bringing sapphire seed into contact with the melt, controlling the rate of lifting of the latter, controlling the temperature field of the melt, and growing is carried out in a prism volume coaxial with the seed crystal, and the edges of the prism are parallel to the crystallographic edges of the latter ; use a seed crystal in the form of a rectangular prism oriented in the <1010> direction, the lateral faces of which coincide with the {0001} planes and, while the single crystal is grown, the volume of the rectangular prism is 0.65-0.7 working volume of the crucible, and two the faces of this prism are parallel to the {0001} plane, and the other two are flat crystal; a device for growing sapphire single crystals containing screens installed in a vacuum chamber, a heater, a crucible with a shaper, a seed holder with a sapphire seed crystal fixed in it, a system for controlling the speed of lifting the seed crystal and the heater power, and the shaper is made in the form of a prism coaxial with the seed crystal whose facets parallel to crystallographic edges of the latter; when using a seed crystal in the form of a rectangular prism oriented in the direction <1919>, the lateral faces of which coincide with the {0001} planes and, the former is made in the form of a rectangular prism whose volume is 0.65-0.7 working volume of the crucible the side faces of the former are parallel to the {0001} plane, and the other two are flat surface of the shatter crystal; crucible with heater

EA200200655A 2002-07-09 2002-07-09 METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN EA200200655A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EA200200655A EA200200655A1 (en) 2002-07-09 2002-07-09 METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EA200200655A EA200200655A1 (en) 2002-07-09 2002-07-09 METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN

Publications (2)

Publication Number Publication Date
EA003419B1 EA003419B1 (en) 2003-04-24
EA200200655A1 true EA200200655A1 (en) 2003-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EA200200655A EA200200655A1 (en) 2002-07-09 2002-07-09 METHOD AND DEVICE FOR CULTIVATION OF SAPPHIRE SINGLE CRYSTALS ACCORDING TO N. BLETSKAN

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU768052A1 (en) * 1978-11-27 1991-02-23 Предприятие П/Я Х-5476 Method of growing monocrystals
US4580613A (en) * 1982-08-05 1986-04-08 Howmet Turbine Components Corporation Method and mold for casting articles having a predetermined crystalline orientation
SU1132606A1 (en) * 1983-08-11 1991-04-07 Предприятие П/Я Х-5476 Apparatus for growing single crystals of high-melting materials
CS264935B1 (en) * 1988-03-10 1989-09-12 Perner Bohumil Treatment of growth conditions and growth sapphire modified by kyropouls method

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