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 methods

Info

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
Application number
GB08163/69A
Inventor
Reginald David Enoch
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB08163/69A priority Critical patent/GB1294445A/en
Priority to US23718A priority patent/US3662357A/en
Priority to CA078,947A priority patent/CA939887A/en
Publication of GB1294445A publication Critical patent/GB1294445A/en
Expired legal-status Critical Current

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

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.
GB08163/69A 1969-04-09 1969-04-09 Improvements relating to methods of manufacturing arrays of thin magnetic elements and arrays produced by the methods Expired GB1294445A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
GB1113903A (en) * 1964-06-16 1968-05-15 Litton Industries Inc Improvements in or relating to magnetic storage or memory structures

Also Published As

Publication number Publication date
US3662357A (en) 1972-05-09
CA939887A (en) 1974-01-15

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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