FR2177508A1 - Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working - Google Patents

Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working

Info

Publication number
FR2177508A1
FR2177508A1 FR7210779A FR7210779A FR2177508A1 FR 2177508 A1 FR2177508 A1 FR 2177508A1 FR 7210779 A FR7210779 A FR 7210779A FR 7210779 A FR7210779 A FR 7210779A FR 2177508 A1 FR2177508 A1 FR 2177508A1
Authority
FR
France
Prior art keywords
starting material
piece
mechanically working
circuit substrate
microwave circuit
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
FR7210779A
Other languages
French (fr)
Other versions
FR2177508B1 (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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Priority to FR7210779A priority Critical patent/FR2177508A1/en
Priority to GB957573A priority patent/GB1428000A/en
Priority to US00337308A priority patent/US3855691A/en
Priority to NL7302964A priority patent/NL7302964A/xx
Publication of FR2177508A1 publication Critical patent/FR2177508A1/en
Application granted granted Critical
Publication of FR2177508B1 publication Critical patent/FR2177508B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/32—Non-reciprocal transmission devices
    • 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
    • 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
    • C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Power Engineering (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

Magnetic article with a non-uniform spatial distribution of the permeability, esp. substances for integrated microcircuits, are produced by (a) making a sintered solid piece of polycrystalline, magnetic, uncompensated starting material, (b) heating this piece at such a temp. that the material F1 is converted into another ferrimagnetic material F3 with a much higher free energy, (c) stopping the heating before the end of the conversion, and (d) mechanically working the piece so that at least part of the outer surface of the treated piece consists of the unconverted material F1. Process enables the permeability of the substrate to be controlled in a desired spatial distribution. The whole article is made from a single material.
FR7210779A 1972-03-07 1972-03-28 Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working Granted FR2177508A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7210779A FR2177508A1 (en) 1972-03-28 1972-03-28 Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working
GB957573A GB1428000A (en) 1972-03-07 1973-02-27 Magnetic materials for magnetic circuits
US00337308A US3855691A (en) 1972-03-07 1973-03-02 Method of making a magnetic material part with spatial distribution of the permeability
NL7302964A NL7302964A (en) 1972-03-07 1973-03-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210779A FR2177508A1 (en) 1972-03-28 1972-03-28 Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working

Publications (2)

Publication Number Publication Date
FR2177508A1 true FR2177508A1 (en) 1973-11-09
FR2177508B1 FR2177508B1 (en) 1974-12-13

Family

ID=9095904

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7210779A Granted FR2177508A1 (en) 1972-03-07 1972-03-28 Integrated microwave circuit substrate - by heating polycrystalline magnetic starting material and mechanically working

Country Status (1)

Country Link
FR (1) FR2177508A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE701460A (en) * 1966-08-09 1968-01-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE701460A (en) * 1966-08-09 1968-01-02

Also Published As

Publication number Publication date
FR2177508B1 (en) 1974-12-13

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