GB730932A - Improvements in or relating to piezoelectric crystal elements and devices incorporating such crystal elements - Google Patents
Improvements in or relating to piezoelectric crystal elements and devices incorporating such crystal elementsInfo
- Publication number
- GB730932A GB730932A GB17006/53A GB1700653A GB730932A GB 730932 A GB730932 A GB 730932A GB 17006/53 A GB17006/53 A GB 17006/53A GB 1700653 A GB1700653 A GB 1700653A GB 730932 A GB730932 A GB 730932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonium
- crystal elements
- thallium
- crystals
- deuterium phosphate
- 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.)
- Expired
Links
- 239000013078 crystal Substances 0.000 title abstract 5
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 abstract 4
- 229910019142 PO4 Inorganic materials 0.000 abstract 4
- 229910052805 deuterium Inorganic materials 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 4
- 239000010452 phosphate Substances 0.000 abstract 4
- QGZKDVFQNNGYKY-JBISRTOLSA-O tetradeuterioazanium Chemical compound [2H][N+]([2H])([2H])[2H] QGZKDVFQNNGYKY-JBISRTOLSA-O 0.000 abstract 3
- 229910052716 thallium Inorganic materials 0.000 abstract 3
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 abstract 2
- 229910052701 rubidium Inorganic materials 0.000 abstract 2
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 abstract 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A piezo-electric device (see Group XL (b)) comprises a crystalline element according to the formula XD2YO3 where X denotes an ammonium -d4 radical or rubidium and Y denotes phosphorous or arsenic, which also contains a small amount of rubidium, if not already present, or thallium. The preferred material is ammonium -d4 deuterium phosphate (ND4D2PO4). Seed crystals may be prepared by reacting heavy ammonia and heavy water. The reactants being heated to 30 DEG C. and then allowed to cool to room temperature. In the growing of crystals from seed thallium may be added to the liquid ammonium -d4 deuterium phosphate in the form of thallium deuterium phosphate. The ammonium -d4 deuterium phosphate crystals are prismatic tetragonalscalenohedra. Specifications 14435/46, 35308/47, both open to inspection under Sect. 91, 641,469, 641,470 and 641,471, [all in Group XL (b)], are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US730932XA | 1952-06-27 | 1952-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB730932A true GB730932A (en) | 1955-06-01 |
Family
ID=22111684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17006/53A Expired GB730932A (en) | 1952-06-27 | 1953-06-19 | Improvements in or relating to piezoelectric crystal elements and devices incorporating such crystal elements |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1085765A (en) |
| GB (1) | GB730932A (en) |
-
1953
- 1953-04-10 FR FR1085765D patent/FR1085765A/en not_active Expired
- 1953-06-19 GB GB17006/53A patent/GB730932A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1085765A (en) | 1955-02-07 |
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