GB979126A - Improvements in or relating to high temperature ferrites - Google Patents

Improvements in or relating to high temperature ferrites

Info

Publication number
GB979126A
GB979126A GB3427863A GB3427863A GB979126A GB 979126 A GB979126 A GB 979126A GB 3427863 A GB3427863 A GB 3427863A GB 3427863 A GB3427863 A GB 3427863A GB 979126 A GB979126 A GB 979126A
Authority
GB
United Kingdom
Prior art keywords
mol
oxide
relating
high temperature
ferrite
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
GB3427863A
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of GB979126A publication Critical patent/GB979126A/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

Landscapes

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

Abstract

979,126. Magnetic compositions. AMPEX CORPORATION. Aug. 29, 1963 [Nov. 1, 1962], No. 34278/63. Heading H1H. A square loop ferrite, which may be formed into toroidal elements for a magnetic memory, comprises substantially: 8.15 mol. % lithium oxide; 54.9 mol. % ferric oxide; 17.39 mol. % manganous oxide; 5.43 mol. % zinc oxide; 14.13 mol. % nickel oxide, which is calcined at between 750‹ and 1000‹ C., pressed into the desired shape and then sintered at between 1000‹ and 1300‹ C. Oxalates or carbonates may be used instead of oxides. The Specification gives an example of firing procedures (including specified atmospheres) and the signal to noise ratio of memory elements made from ferrite according to the invention.
GB3427863A 1962-11-01 1963-08-29 Improvements in or relating to high temperature ferrites Expired GB979126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23485962A 1962-11-01 1962-11-01

Publications (1)

Publication Number Publication Date
GB979126A true GB979126A (en) 1965-01-01

Family

ID=22883119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3427863A Expired GB979126A (en) 1962-11-01 1963-08-29 Improvements in or relating to high temperature ferrites

Country Status (4)

Country Link
FR (1) FR1367944A (en)
GB (1) GB979126A (en)
NL (1) NL297832A (en)
SE (1) SE307530B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1771987B1 (en) * 1968-08-12 1972-03-09 Siemens Ag FERROMAGNETIC MANGANE MAGNESIUM ZINC FERRITE WITH RIGHT ANGULAR HYSTERESIS LOOP FOR MEMORY AND SWITCH ELEMENTS AND PROCESS FOR ITS PRODUCTION

Also Published As

Publication number Publication date
FR1367944A (en) 1964-07-24
SE307530B (en) 1969-01-07
NL297832A (en) 1965-11-10

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