JPS5562884A - Chrysoberyl single crystal showing cat's-eye effect and production thereof - Google Patents

Chrysoberyl single crystal showing cat's-eye effect and production thereof

Info

Publication number
JPS5562884A
JPS5562884A JP13432778A JP13432778A JPS5562884A JP S5562884 A JPS5562884 A JP S5562884A JP 13432778 A JP13432778 A JP 13432778A JP 13432778 A JP13432778 A JP 13432778A JP S5562884 A JPS5562884 A JP S5562884A
Authority
JP
Japan
Prior art keywords
single crystal
crystal
interface
lamp
mirror
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP13432778A
Other languages
Japanese (ja)
Other versions
JPS6149280B2 (en
Inventor
Akihiko Kawachi
Hironao Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP13432778A priority Critical patent/JPS5562884A/en
Publication of JPS5562884A publication Critical patent/JPS5562884A/en
Publication of JPS6149280B2 publication Critical patent/JPS6149280B2/ja
Granted legal-status Critical Current

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  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

PURPOSE: To produce a high quality large size chrysoberyl single crystal free from a flaw, a strain, etc. by concentrating infrared rays from a halogen lamp or the like on a rodlike high density sintered body contg. Al2O3, BeO and titanium oxide with a spheroidal mirror to form a melting zone and by growing a single crystal on the zone interface.
CONSTITUTION: Halogen lamp or Xe are lamp 2 is set at one focus of spheroidal mirror 1, and rodlike sintered body raw material 3 contg. Al2O3, BeO and titanium oxide at the other focus. Material 3 and seed crystal 5 are held with upper and lower rotary shafts 4, 6, respectively, they are sealed in transparent quartz tube 7, and the atmosphere is controlled freely. Infrared rays from lamp 2 are concentrated with mirror 1 to form molten body 8, and by moving crystal 5 upward it is contacted to body 8. After an equilibrium state is attained, by moving shafts 4, 6 the raw material is melted at the interface between body 8 and rod 3, and crystallization takes place at the interface between body 8 and crystal 5.
COPYRIGHT: (C)1980,JPO&Japio
JP13432778A 1978-10-31 1978-10-31 Chrysoberyl single crystal showing cat's-eye effect and production thereof Granted JPS5562884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13432778A JPS5562884A (en) 1978-10-31 1978-10-31 Chrysoberyl single crystal showing cat's-eye effect and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13432778A JPS5562884A (en) 1978-10-31 1978-10-31 Chrysoberyl single crystal showing cat's-eye effect and production thereof

Publications (2)

Publication Number Publication Date
JPS5562884A true JPS5562884A (en) 1980-05-12
JPS6149280B2 JPS6149280B2 (en) 1986-10-28

Family

ID=15125724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13432778A Granted JPS5562884A (en) 1978-10-31 1978-10-31 Chrysoberyl single crystal showing cat's-eye effect and production thereof

Country Status (1)

Country Link
JP (1) JPS5562884A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115092A (en) * 1981-12-25 1983-07-08 Seiko Epson Corp Beryl crystal prepared by f-z process
WO1985000392A1 (en) * 1983-07-14 1985-01-31 Sumitomo Cement Co., Ltd. Chrysoberyl single crystal showing iridescent effect and process for its preparation
US4621065A (en) * 1983-09-24 1986-11-04 Kyocera Corporation Chrysoberyl cat's-eye synthetic single crystal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115092A (en) * 1981-12-25 1983-07-08 Seiko Epson Corp Beryl crystal prepared by f-z process
JPH0253399B2 (en) * 1981-12-25 1990-11-16 Seiko Epson Corp
WO1985000392A1 (en) * 1983-07-14 1985-01-31 Sumitomo Cement Co., Ltd. Chrysoberyl single crystal showing iridescent effect and process for its preparation
GB2159433A (en) * 1983-07-14 1985-12-04 Sumitomo Cement Co Chrysoberyl single crystal showing iridescent effect and process for its preparation
US4634492A (en) * 1983-07-14 1987-01-06 Sumitomo Cement Co., Ltd. Chrysoberyl single crystal and method of producing the same
US4621065A (en) * 1983-09-24 1986-11-04 Kyocera Corporation Chrysoberyl cat's-eye synthetic single crystal

Also Published As

Publication number Publication date
JPS6149280B2 (en) 1986-10-28

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