FR2426031A1 - COMPOSITE AGENTS CONSISTING OF PHOSPHORUS PENTOXIDE WITH VANADIUM PENTOXIDE OR BISMUTH TRIOXIDE FOR SINTING LITHIUM FERRITES - Google Patents

COMPOSITE AGENTS CONSISTING OF PHOSPHORUS PENTOXIDE WITH VANADIUM PENTOXIDE OR BISMUTH TRIOXIDE FOR SINTING LITHIUM FERRITES

Info

Publication number
FR2426031A1
FR2426031A1 FR7912154A FR7912154A FR2426031A1 FR 2426031 A1 FR2426031 A1 FR 2426031A1 FR 7912154 A FR7912154 A FR 7912154A FR 7912154 A FR7912154 A FR 7912154A FR 2426031 A1 FR2426031 A1 FR 2426031A1
Authority
FR
France
Prior art keywords
pentoxide
bismuth trioxide
lithium ferrites
sinting
agents consisting
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.)
Granted
Application number
FR7912154A
Other languages
French (fr)
Other versions
FR2426031B1 (en
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 FR2426031A1 publication Critical patent/FR2426031A1/en
Application granted granted Critical
Publication of FR2426031B1 publication Critical patent/FR2426031B1/fr
Granted 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
    • C04B35/2691—Other ferrites containing alkaline metals

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)

Abstract

L'invention concerne des agents composites constitués de pentoxyde de phosphore avec du pentoxyde de vanadium ou du trioxyde de bismuth pour le frittage des ferrites de Lithium. On fritte des ferrites de lithium avec un mélange de pentoxyde de phosphore et de pentoxyde de vanadium ou de trioxyde de bismuth pour produire des tores de mémoire de densité élevée et de faible taille des grains ayant des facteurs de qualité élevés; les ferrites de lithium peuvent contenir des ions additionnels tels que des ions zinc, nickel et manganèse. L'invention s'applique en particulier à la préparation de tores de mémoire.The invention relates to composite agents consisting of phosphorus pentoxide with vanadium pentoxide or bismuth trioxide for sintering lithium ferrites. Lithium ferrites are sintered with a mixture of phosphorus pentoxide and vanadium pentoxide or bismuth trioxide to produce high density, low grain size memory toroids having high quality factors; lithium ferrites can contain additional ions such as zinc, nickel and manganese ions. The invention applies in particular to the preparation of memory tori.

FR7912154A 1978-05-18 1979-05-14 COMPOSITE AGENTS CONSISTING OF PHOSPHORUS PENTOXIDE WITH VANADIUM PENTOXIDE OR BISMUTH TRIOXIDE FOR SINTING LITHIUM FERRITES Granted FR2426031A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90703978A 1978-05-18 1978-05-18

Publications (2)

Publication Number Publication Date
FR2426031A1 true FR2426031A1 (en) 1979-12-14
FR2426031B1 FR2426031B1 (en) 1981-12-31

Family

ID=25423422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912154A Granted FR2426031A1 (en) 1978-05-18 1979-05-14 COMPOSITE AGENTS CONSISTING OF PHOSPHORUS PENTOXIDE WITH VANADIUM PENTOXIDE OR BISMUTH TRIOXIDE FOR SINTING LITHIUM FERRITES

Country Status (6)

Country Link
JP (1) JPS5515989A (en)
BE (1) BE876320A (en)
DE (1) DE2920192C2 (en)
FR (1) FR2426031A1 (en)
GB (1) GB2021088B (en)
IT (1) IT1116811B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3121930A1 (en) * 2021-04-19 2022-10-21 Thales LOW LOSS LITHIUM FERRITE MATERIAL FOR POWER CONTROLLED MICROWAVE DEVICE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4424469A (en) 1981-04-02 1984-01-03 Rca Corporation Television receiver ferroresonant high voltage power supply using temperature stable core material
IL63204A0 (en) * 1980-07-16 1981-09-13 Rca Corp Improved thermally-stable ferrite,improved lithium ferrite and method of manufacture,television receiver ferroresonant high voltage power supply using temperature stable corematerial
US5461015A (en) * 1994-08-29 1995-10-24 Raychem Corporation High strength porcelain and method therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300411A (en) * 1964-02-21 1967-01-24 Ampex Fluxes for sintering lithium ferrites
US3372122A (en) * 1964-08-13 1968-03-05 Rca Corp Vanadium-containing lithium ferrites
GB1299667A (en) * 1969-05-06 1972-12-13 Hitachi Ltd Memory cores having rectangular hysteresis loop characteristics and method of manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3121930A1 (en) * 2021-04-19 2022-10-21 Thales LOW LOSS LITHIUM FERRITE MATERIAL FOR POWER CONTROLLED MICROWAVE DEVICE
EP4079701A1 (en) * 2021-04-19 2022-10-26 Thales Low-loss lithium ferrite material for power-controllable hyperfrequency device

Also Published As

Publication number Publication date
GB2021088B (en) 1982-07-07
BE876320A (en) 1979-09-17
JPS5515989A (en) 1980-02-04
IT7949050A0 (en) 1979-05-15
FR2426031B1 (en) 1981-12-31
DE2920192C2 (en) 1982-07-08
GB2021088A (en) 1979-11-28
DE2920192A1 (en) 1979-11-22
IT1116811B (en) 1986-02-10

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Legal Events

Date Code Title Description
ST Notification of lapse