GB752156A - Improvements in or relating to oxide magnets - Google Patents

Improvements in or relating to oxide magnets

Info

Publication number
GB752156A
GB752156A GB18444/54A GB1844454A GB752156A GB 752156 A GB752156 A GB 752156A GB 18444/54 A GB18444/54 A GB 18444/54A GB 1844454 A GB1844454 A GB 1844454A GB 752156 A GB752156 A GB 752156A
Authority
GB
United Kingdom
Prior art keywords
oxide
ratio
relating
oxide magnets
magnet
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
GB18444/54A
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 GB752156A publication Critical patent/GB752156A/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
    • C04B35/2666—Other ferrites containing 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)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

752,156. Magnetic compositions. BUFFET, P. June 23, 1954 [July 9, 1953], No. 18444/54. Class 38 (2). A permanent magnet is made by heating together metallic oxide powders comprising Fe 3 O 4 and Fe 2 O 3 in the weight ratio of between 2.5 and 3.3. to 1, and another oxide, preferably Co.O. Preferably the ratio of Fe 3 O 4 to Fe 2 O 3 is between 2.5 and 2.9 and the ratio of Cobalt oxide to total iron oxide is between 2.1 to 2.8. The magnetic properties of such a magnet are particularly stable and reproducible. The mixture may be heated to between 950‹ and 1050‹ C. in an inert gas such as nitrogen.
GB18444/54A 1953-07-09 1954-06-23 Improvements in or relating to oxide magnets Expired GB752156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1086346T 1953-07-09

Publications (1)

Publication Number Publication Date
GB752156A true GB752156A (en) 1956-07-04

Family

ID=9612773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18444/54A Expired GB752156A (en) 1953-07-09 1954-06-23 Improvements in or relating to oxide magnets

Country Status (3)

Country Link
BE (1) BE576828Q (en)
FR (1) FR1086346A (en)
GB (1) GB752156A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951810A (en) * 1957-02-16 1960-09-06 Kikuchi Yoshimitsu Ferrite
US3031341A (en) * 1958-01-23 1962-04-24 Ibm High density magnetic recording tape
US3081264A (en) * 1958-04-09 1963-03-12 Matake Kurokawa Method of preparing a magnetic recorder powder

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE546412A (en) * 1955-04-11
US3015788A (en) * 1956-04-13 1962-01-02 Raytheon Co Microwave device
NL111324C (en) * 1957-05-13 1965-06-15
US3078234A (en) * 1958-04-24 1963-02-19 Jr Charles M Davis Magnetostrictive ferrite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951810A (en) * 1957-02-16 1960-09-06 Kikuchi Yoshimitsu Ferrite
US3031341A (en) * 1958-01-23 1962-04-24 Ibm High density magnetic recording tape
US3081264A (en) * 1958-04-09 1963-03-12 Matake Kurokawa Method of preparing a magnetic recorder powder

Also Published As

Publication number Publication date
FR1086346A (en) 1955-02-11
BE576828Q (en) 1959-07-16

Similar Documents

Publication Publication Date Title
SE7607760L (en) PERMANENT MAGNET AND PROCEDURES FOR THE PRODUCTION OF THE SAME
GB752156A (en) Improvements in or relating to oxide magnets
GB726522A (en) Improvements in and relating to mixed ferrite compositions
GB718204A (en) Ferromagnetic ferrite materials
GB679349A (en) Improvements in and relating to magnetically soft mixed ferrite materials
GB790538A (en) Non-reciprocal microwave transmission device
GB683722A (en) Ferromagnetic materials
GB849217A (en) Improvements in or relating to magnetic ferrites
ES219075A1 (en) Method of producing magnet cores having an approximately rectangular shape of the hysteresis loop
GB823971A (en) Improvements in or relating to ferromagnetic ferrite materials
GB793551A (en) Improvements relating to mixed ferromagnetic ferrites
GB764118A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB789099A (en) Improvements in or relating to a method of producing magnetic cores
GB940163A (en) Method of preparing substantially cobalt-free ferrite material
JPS567406A (en) Pole piece material for magnet
GB849218A (en) Improvements in or relating to magnetic ferrites
GB701364A (en) Improvements in and relating to mixed ferrite compositions
SU384922A1 (en) ALLOY BASED ON SAMARI-COBALT SYSTEM
GB849464A (en) Improvements in or relating to magnetic ferrites
GB682838A (en) Improvements in the manufacture of permanent magnets made of oxides
GB763809A (en) Improvements in or relating to a method of manufacturing a non-metallic magnetic core having a substantially rectangular hysteresis loop
GB821633A (en) Improvements in or relating to a method of manufacturing non-metallic ferromagnetic bodies and to bodies thus manufactured
GB849219A (en) Improvements in or relating to magnetic ferrites
GB1230815A (en)
GB681300A (en) Improvements in and relating to permanent magnets