GB1294445A - Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods - Google Patents
Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methodsInfo
- Publication number
- GB1294445A GB1294445A GB08163/69A GB1816369A GB1294445A GB 1294445 A GB1294445 A GB 1294445A GB 08163/69 A GB08163/69 A GB 08163/69A GB 1816369 A GB1816369 A GB 1816369A GB 1294445 A GB1294445 A GB 1294445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- methods
- arrays
- magnetic
- film
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49069—Data storage inductor or core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
1294445 Magnetic storage devices POST OFFICE 31 March 1970 [9 April 1969] 18163/69 Heading H3B In a method of making an array of thin film storage elements, an apertured thin film is annealed in a magnetic field to produce an easy axis of magnetization, and is then fixed to an insulating non-magnetic substrate 4, Fig. 2, so that areas of the film may be etched away to form individual elements 5. Each element has at least one aperture 2 therein, and the easy axis runs around the circumference as shown in Fig. 4. The annealing may be from above the Curie point of the film, or may be carried out isothermally below the Curie point. The substrate has suitable disposed holes (not shown) for the element drive conductors to pass through. The elements and holes may be circular, rectangular or elongate, e.g. elliptical. The elements may each contain several apertures, and may have several magnetic paths, e.g. transfluxors. The drive conductors may be threaded through the elements or deposited through them by the printed circuit technique of Specification 1,291,236.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08163/69A GB1294445A (en) | 1969-04-09 | 1969-04-09 | Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods |
US23718A US3662357A (en) | 1969-04-09 | 1970-03-30 | Methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods |
CA078,947A CA939887A (en) | 1969-04-09 | 1970-04-02 | Methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08163/69A GB1294445A (en) | 1969-04-09 | 1969-04-09 | Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1294445A true GB1294445A (en) | 1972-10-25 |
Family
ID=10107733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08163/69A Expired GB1294445A (en) | 1969-04-09 | 1969-04-09 | Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods |
Country Status (3)
Country | Link |
---|---|
US (1) | US3662357A (en) |
CA (1) | CA939887A (en) |
GB (1) | GB1294445A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892603A (en) * | 1971-09-01 | 1975-07-01 | Raytheon Co | Method of making magnets |
US20050081367A1 (en) * | 2003-10-21 | 2005-04-21 | Lauinger Geoffrey A. | Method of manufacturing a media reference surface for use in a flexible data storage card |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125472A (en) * | 1964-03-17 | Process for the production of magnetic materials | ||
US3077583A (en) * | 1957-12-30 | 1963-02-12 | Ibm | Magnetic core flux steering device |
US3123808A (en) * | 1958-07-16 | 1964-03-03 | Magnetic storage device | |
NL130453C (en) * | 1958-11-25 | |||
US3183567A (en) * | 1961-03-31 | 1965-05-18 | Ibm | Manufacturing magnetic storage matrices |
GB1113902A (en) * | 1964-06-16 | 1968-05-15 | Litton Industries Inc | Improvements in or relating to magnetic storage or memory structures |
-
1969
- 1969-04-09 GB GB08163/69A patent/GB1294445A/en not_active Expired
-
1970
- 1970-03-30 US US23718A patent/US3662357A/en not_active Expired - Lifetime
- 1970-04-02 CA CA078,947A patent/CA939887A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA939887A (en) | 1974-01-15 |
US3662357A (en) | 1972-05-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |