US3728152A
Expired / Lapsed
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Method for producing bubble domains in magnetic film-substrate structures
Assignee: Boeing North American Inc
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Filing: 1970-12-28
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Granted: 1973-04-17
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Expires: 1990-12-28
Abstract
Abstract A METHOD FOR PRODUCING A BUBVBLE COMAIN IN A MAGNETIC SINGLE CRYSTAL GARNET FILM-SUBSTRATE STRUCTURE IS DISCLOSED. THE METHOD INVOLVES THE EPITAXIAL DEPOSITION OF AN IRON GARNET FILM OF THE PROPER CRYSTALLOGRAPHIC ORIENTATION AND HAVING A NEGATIVE MAGNETOSTRICTION CONSTANT ON A GARNET SUBSTRATE IN WHICH THE ROOM TEMPERATURE LATTICE CONSTANT OF THE SUBSTRATE IS LARGER THAN THE ROOM TEMPERAURE LATTICE CONSTANT OF THE FILM, PREFERABLY BY AN AMOUNT LESS THAN 0.016 ANGSTROM.
Inventors
- 👤 J Mee
- 👤 P Besser
- 👤 P Elkins
- 👤 G Pulliam
- 👤 D Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:59
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/24; H01F41/28; C; C01; C01G; C01G39/00; C01G39/02; C01G47/00; C22; C22B; C22B1/00; C22B1/02; C22B1/14; C22B1/16; C22B1/20; C22B59/00; C22B61/00; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/40; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/10; C30B29/16; C30B29/22; C30B29/28; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H01F10/24; H01F41/20; C01P; C01P2002/00; C01P2002/70; C01P2002/77; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/86; C01P2006/00; C01P2006/42; Y; Y10; Y10S; Y10S117/00; Y10S117/917
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |