GB754370A - A ceramic magnetic material - Google Patents

A ceramic magnetic material

Info

Publication number
GB754370A
GB754370A GB2097654A GB2097654A GB754370A GB 754370 A GB754370 A GB 754370A GB 2097654 A GB2097654 A GB 2097654A GB 2097654 A GB2097654 A GB 2097654A GB 754370 A GB754370 A GB 754370A
Authority
GB
United Kingdom
Prior art keywords
oxides
per cent
oxide
magnetic material
july
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
GB2097654A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB754370A publication Critical patent/GB754370A/en
Expired legal-status Critical Current

Links

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
    • 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
    • C04B35/2633—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 barium, strontium or calcium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)

Abstract

754,370. Magnetic compositions. HOLM, S. July 19, 1954 [July 20, 1953; Nov. 6, 1953], No. 20976/54. Class 38 (2). A ceramic magnetic material is made by sintering a mixture of lithium, strontium and ferric oxides together with zinc and/or cadmium oxides. The mixture contains in mol. percentages, strontium oxide 0.02-5 per cent, lithium oxide 3-20 per cent, zinc and/or cadmium oxides 3-15 per cent, the remainder being ferric oxide. The oxides are ball milled, presintered, e.g. at 800‹ or 850‹ C., reground, moulded, and finally sintered at 940‹ C., 950‹ C. or 965‹ C. in air. Valves of initial permeability, Q, and tan 8 for different frequencies up to 250 Mc/sec. are quoted for bodies made with different proportions of starting materials.
GB2097654A 1953-07-20 1954-07-19 A ceramic magnetic material Expired GB754370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK754370X 1953-07-20

Publications (1)

Publication Number Publication Date
GB754370A true GB754370A (en) 1956-08-08

Family

ID=8152636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2097654A Expired GB754370A (en) 1953-07-20 1954-07-19 A ceramic magnetic material

Country Status (2)

Country Link
FR (1) FR1110819A (en)
GB (1) GB754370A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028336A (en) * 1957-09-25 1962-04-03 Ibm Cadmium manganese ferrospinel composition
US3030307A (en) * 1958-04-29 1962-04-17 Sylvania Electric Prod Ferrite material containing lithium and aluminum oxides
US3042619A (en) * 1959-12-31 1962-07-03 Ibm Ferrite composition for bistable magnetic circuits
US3043776A (en) * 1957-04-18 1962-07-10 Philips Corp Ferromagnetic oxidic material

Families Citing this family (5)

* 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
US2986523A (en) * 1957-05-02 1961-05-30 Philips Corp Modified lithium ferrite
NL111324C (en) * 1957-05-13 1965-06-15
NL99528C (en) * 1957-06-22 1961-11-15
DE1671071C3 (en) * 1967-09-26 1974-09-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method of making a ferromagnetic !! Lithium zinc ferrite core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043776A (en) * 1957-04-18 1962-07-10 Philips Corp Ferromagnetic oxidic material
US3028336A (en) * 1957-09-25 1962-04-03 Ibm Cadmium manganese ferrospinel composition
US3030307A (en) * 1958-04-29 1962-04-17 Sylvania Electric Prod Ferrite material containing lithium and aluminum oxides
US3042619A (en) * 1959-12-31 1962-07-03 Ibm Ferrite composition for bistable magnetic circuits

Also Published As

Publication number Publication date
FR1110819A (en) 1956-02-17

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