JPS56114899A - Single crystal of aluminum phosphate - Google Patents
Single crystal of aluminum phosphateInfo
- Publication number
- JPS56114899A JPS56114899A JP1395080A JP1395080A JPS56114899A JP S56114899 A JPS56114899 A JP S56114899A JP 1395080 A JP1395080 A JP 1395080A JP 1395080 A JP1395080 A JP 1395080A JP S56114899 A JPS56114899 A JP S56114899A
- Authority
- JP
- Japan
- Prior art keywords
- container
- alpo
- sealed
- iii
- single 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
Links
Abstract
PURPOSE: To provide an aluminum phosphate single crystal having a coupling constant larger than that of quartz and a temperature coefficient of frequency of the same level to quartz, by growing the crystal of aluminum phosphate doped with a III-group element.
CONSTITUTION: A mixture of commercially available AlPO4 powder and the oxide and/or hydroxide of a III-group element is put to the bottom of a container made of Teflon. The container is filled with H3PO4 solution, sealed, heated rapidly to 160°C, kept at 160°C for 24hr, heated to 250°C at a rate of 10°C/day, and cooled after the desired period. The crystals larger than 60 mesh are separated from the product and used as the raw material 1. The raw material 1 and seed crystals 2 are set in the Teflon container 4, a definite amount of H3PO4 solution is poured into the container 4, and the container 4 is sealed and set in an autoclave 3, which is then sealed with a cover 5, a packing 6 and a screw head 7. After growing the crystal for a definite period at a constant temperature, the single crystal of AlPO4 deped with impurities wherein a part of Al constituting AlPO4 is substituted by a III-group element, is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1395080A JPS56114899A (en) | 1980-02-07 | 1980-02-07 | Single crystal of aluminum phosphate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1395080A JPS56114899A (en) | 1980-02-07 | 1980-02-07 | Single crystal of aluminum phosphate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56114899A true JPS56114899A (en) | 1981-09-09 |
Family
ID=11847477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1395080A Pending JPS56114899A (en) | 1980-02-07 | 1980-02-07 | Single crystal of aluminum phosphate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56114899A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH022186A (en) * | 1987-12-15 | 1990-01-08 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Piezoelectric crystal device and its manufacture |
US4992694A (en) * | 1988-11-25 | 1991-02-12 | AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof.Dr.Dr.h.c. Hans List | Piezoelectric crystal element on the basis of GAPO4 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5356198A (en) * | 1976-11-01 | 1978-05-22 | Hitachi Ltd | Preparation of ultraphosphate crystals |
JPS5469595A (en) * | 1977-11-14 | 1979-06-04 | Seiko Instr & Electronics Ltd | A po4 single crystal |
-
1980
- 1980-02-07 JP JP1395080A patent/JPS56114899A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5356198A (en) * | 1976-11-01 | 1978-05-22 | Hitachi Ltd | Preparation of ultraphosphate crystals |
JPS5469595A (en) * | 1977-11-14 | 1979-06-04 | Seiko Instr & Electronics Ltd | A po4 single crystal |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH022186A (en) * | 1987-12-15 | 1990-01-08 | Avl Ges Verbrennungskraftmas & Messtech Mbh | Piezoelectric crystal device and its manufacture |
AT393183B (en) * | 1987-12-15 | 1991-08-26 | Avl Verbrennungskraft Messtech | PIEZOELECTRIC CRYSTAL ELEMENT AND METHOD FOR PRODUCING THE SAME |
JPH055388B2 (en) * | 1987-12-15 | 1993-01-22 | Aa Fuau Eru G Fuyua Fueaburenungusu Kurafutomashiinen Unto Mesutehiniku Gmbh Purofuetsusaa Dokutaa Dokutaa Haa Tsuee Hansu Risuto | |
US4992694A (en) * | 1988-11-25 | 1991-02-12 | AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof.Dr.Dr.h.c. Hans List | Piezoelectric crystal element on the basis of GAPO4 |
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