US3376227A - Lithium nickel ferrite magnetic switching element - Google Patents

Lithium nickel ferrite magnetic switching element Download PDF

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Publication number
US3376227A
US3376227A US376238A US37623864A US3376227A US 3376227 A US3376227 A US 3376227A US 376238 A US376238 A US 376238A US 37623864 A US37623864 A US 37623864A US 3376227 A US3376227 A US 3376227A
Authority
US
United States
Prior art keywords
temperature
minutes
annular
mms
switching element
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 - Lifetime
Application number
US376238A
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English (en)
Inventor
Gerrit Antonie Herman Va Driel
Esveldt Cornelis Jacobus
Joosten Johannes Engelmundus
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3376227A publication Critical patent/US3376227A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2616—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing lithium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites

Definitions

  • Our invention relates to magnetic cores for use as a magnetic switching element for controlling core storages, and particularly to a process of making the same.
  • magnetic cores When magnetic cores are used as storage elements or magnetic switching elements, it is desirable to restrict, as far as possible, the appearance of eddy currents. Consequently, such cores are usually constituted of soft-magnetic, oxidic materials, which, as is known, have a very low electrical conductivity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
US376238A 1963-06-20 1964-06-18 Lithium nickel ferrite magnetic switching element Expired - Lifetime US3376227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL294371 1963-06-20

Publications (1)

Publication Number Publication Date
US3376227A true US3376227A (en) 1968-04-02

Family

ID=19754802

Family Applications (1)

Application Number Title Priority Date Filing Date
US376238A Expired - Lifetime US3376227A (en) 1963-06-20 1964-06-18 Lithium nickel ferrite magnetic switching element

Country Status (11)

Country Link
US (1) US3376227A (xx)
AT (1) AT247036B (xx)
BE (1) BE649467A (xx)
CH (1) CH455957A (xx)
DE (1) DE1471347A1 (xx)
DK (1) DK116805B (xx)
ES (1) ES301174A1 (xx)
FR (1) FR1399248A (xx)
GB (1) GB1003533A (xx)
NL (1) NL294371A (xx)
OA (1) OA00766A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523901A (en) * 1966-12-28 1970-08-11 Hitachi Ltd Magnetic material having square hysteresis loop characteristic and a memory core made of the same
US3860524A (en) * 1969-12-29 1975-01-14 Spang Ind Inc High permeability manganese-zinc ferrites

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038860A (en) * 1956-12-20 1962-06-12 Francis E Vinal Lithium nickel ferrites
US3226328A (en) * 1962-01-05 1965-12-28 Philips Corp Method for making lithium nickel ferrite having a substantially rectangular hysteresis loop

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038860A (en) * 1956-12-20 1962-06-12 Francis E Vinal Lithium nickel ferrites
US3226328A (en) * 1962-01-05 1965-12-28 Philips Corp Method for making lithium nickel ferrite having a substantially rectangular hysteresis loop

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523901A (en) * 1966-12-28 1970-08-11 Hitachi Ltd Magnetic material having square hysteresis loop characteristic and a memory core made of the same
US3860524A (en) * 1969-12-29 1975-01-14 Spang Ind Inc High permeability manganese-zinc ferrites

Also Published As

Publication number Publication date
BE649467A (xx)
OA00766A (fr) 1967-11-15
NL294371A (xx)
AT247036B (de) 1966-05-25
DK116805B (da) 1970-02-16
DE1471347A1 (de) 1969-02-27
GB1003533A (xx) 1965-09-02
FR1399248A (fr) 1965-05-14
CH455957A (de) 1968-05-15
ES301174A1 (es) 1962-12-16

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