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GB679349A - Improvements in and relating to magnetically soft mixed ferrite materials - Google Patents

Improvements in and relating to magnetically soft mixed ferrite materials

Info

Publication number
GB679349A
GB679349A GB9649/51A GB964951A GB679349A GB 679349 A GB679349 A GB 679349A GB 9649/51 A GB9649/51 A GB 9649/51A GB 964951 A GB964951 A GB 964951A GB 679349 A GB679349 A GB 679349A
Authority
GB
United Kingdom
Prior art keywords
oxide
copper oxide
mol
per cent
relating
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
GB9649/51A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB679349A publication Critical patent/GB679349A/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
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt

Landscapes

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

Abstract

679,349. Magnetic compositions. BRITISH THOMSON-HOUSTON CO., Ltd. April 25, 1951 [May 10, 1950], No. 9649/51. Drawings to Specification. Class 38 (ii). A mixed crystal ferrite suitable for magnetic cores having a low dielectric constant, a high initial permeability and a high resistivity is composed of 47-49 mol. per cent iron oxide, 1-8 mol per cent copper oxide, 28-38 mol. per cent zinc oxide, with balance of nickel oxide. Known ferrites of similar composition but with the whole of the copper oxide replaced by nickel oxide show similar properties, if a higher sintering and therefore less economic temperature is used, Figs. 2, 3 (not shown). From curves showing variation of resistivity, and B for various values of H, with different percentages of copper oxide, it can be seen how much copper oxide is needed in any case. Sintering at 1200 C. in air is satisfactory.
GB9649/51A 1950-05-10 1951-04-25 Improvements in and relating to magnetically soft mixed ferrite materials Expired GB679349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US161188A US2685568A (en) 1950-05-10 1950-05-10 Soft ferromagnetic mixed ferrite material

Publications (1)

Publication Number Publication Date
GB679349A true GB679349A (en) 1952-09-17

Family

ID=22580206

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9649/51A Expired GB679349A (en) 1950-05-10 1951-04-25 Improvements in and relating to magnetically soft mixed ferrite materials

Country Status (6)

Country Link
US (1) US2685568A (en)
BE (1) BE503124A (en)
DE (1) DE970458C (en)
FR (1) FR1049318A (en)
GB (1) GB679349A (en)
NL (1) NL81425C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773039A (en) * 1952-11-24 1956-12-04 Steatite Res Corp Magnetically strong ferromagnetic magnesium-zinc type of ferrite
BE546412A (en) * 1955-04-11
BE554978A (en) * 1956-02-15
US2967794A (en) * 1956-09-12 1961-01-10 Handy & Harman Fine particle magnets
BE562891A (en) * 1956-12-14
US3003966A (en) * 1957-09-09 1961-10-10 Bell Telephone Labor Inc Polycrystalline garnet materials
US3100194A (en) * 1958-01-15 1963-08-06 Philips Corp Ferromagnetic material and method of making the same
DE1182129B (en) * 1958-06-04 1964-11-19 Licentia Gmbh Process for the production of a magnetic core material with an almost rectangular hysteresis loop
NL252610A (en) * 1959-06-17
US4042518A (en) * 1973-09-05 1977-08-16 Xerox Corporation Stoichiometric ferrite carriers
US5435929A (en) * 1992-02-28 1995-07-25 Kureha Kagaku Kogyo Kabushiki Kaisha Permeable magnetic composition and magnetic component
KR100222757B1 (en) * 1996-11-30 1999-10-01 이형도 Soft magnetic material for inductor and manufacturing method of inductor using same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1976230A (en) * 1930-12-25 1934-10-09 Mitsubishi Electric Corp Permanent magnet and method of manufacturing same
BE447683A (en) * 1941-10-24
US2452530A (en) * 1943-05-15 1948-10-26 Hartford Nat Bank & Trust Co Magnetic core
CH260717A (en) * 1943-05-31 1949-03-31 Philips Nv A method of manufacturing a magnetic core, and a magnetic core manufactured by this method.
US2656319A (en) * 1949-01-03 1953-10-20 Aladdin Ind Inc Magnetic core composition and method of producing the same

Also Published As

Publication number Publication date
US2685568A (en) 1954-08-03
DE970458C (en) 1958-09-18
NL81425C (en)
BE503124A (en)
FR1049318A (en) 1953-12-29

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