JPS5585500A - Single crystal growing method - Google Patents

Single crystal growing method

Info

Publication number
JPS5585500A
JPS5585500A JP16384278A JP16384278A JPS5585500A JP S5585500 A JPS5585500 A JP S5585500A JP 16384278 A JP16384278 A JP 16384278A JP 16384278 A JP16384278 A JP 16384278A JP S5585500 A JPS5585500 A JP S5585500A
Authority
JP
Japan
Prior art keywords
temp
furnace
gradient
diameter
crystal
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.)
Pending
Application number
JP16384278A
Other languages
Japanese (ja)
Inventor
Yoshio Fujino
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP16384278A priority Critical patent/JPS5585500A/en
Publication of JPS5585500A publication Critical patent/JPS5585500A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To obtain a crack-free Bi12GeO26 single crystal of a uniform diameter by adjusting the temp. gradient in a furnace at a portion right above the surface of a melt to 130W170°C/cm in growing the crystal by a pulling method.
CONSTITUTION: When sintered Bi12GeO26 is melted in a platinum crucible of 50mm diameter and 50mm depth set in a furnace to grow a single crystal by pulling, the temp. gradient in the furnace from 0cm to 3cm right above the melt surface is adjusted to 130W170°C/cm, and an after-heater is attached so that the temp. in the furnace above the portion of 0W3cm is made constant. As a result, stable diameter control is enabled, the grown crystal has an almost uniform diameter of about 25mm, and the crystal of about 25mm diameter and 25mm length is not cracked even if out into 1mm thick sheet. The temp. gradient range is not necessarily restricted within 3cm, and the same effect is obtd. even in case of 1m by maintaining the above- mentioned temp. gradient.
COPYRIGHT: (C)1980,JPO&Japio
JP16384278A 1978-12-22 1978-12-22 Single crystal growing method Pending JPS5585500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16384278A JPS5585500A (en) 1978-12-22 1978-12-22 Single crystal growing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16384278A JPS5585500A (en) 1978-12-22 1978-12-22 Single crystal growing method

Publications (1)

Publication Number Publication Date
JPS5585500A true JPS5585500A (en) 1980-06-27

Family

ID=15781779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16384278A Pending JPS5585500A (en) 1978-12-22 1978-12-22 Single crystal growing method

Country Status (1)

Country Link
JP (1) JPS5585500A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057150A (en) * 2006-08-30 2008-03-13 Nikko:Kk Folding ladder

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218500A (en) * 1975-08-04 1977-02-12 Sumitomo Electric Ind Ltd Process for production of photoconductive electro-optical single crist al

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218500A (en) * 1975-08-04 1977-02-12 Sumitomo Electric Ind Ltd Process for production of photoconductive electro-optical single crist al

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057150A (en) * 2006-08-30 2008-03-13 Nikko:Kk Folding ladder

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