FR2158725A5 - Ferromagnetic garnet - for use at high frequency - Google Patents

Ferromagnetic garnet - for use at high frequency

Info

Publication number
FR2158725A5
FR2158725A5 FR7139039A FR7139039A FR2158725A5 FR 2158725 A5 FR2158725 A5 FR 2158725A5 FR 7139039 A FR7139039 A FR 7139039A FR 7139039 A FR7139039 A FR 7139039A FR 2158725 A5 FR2158725 A5 FR 2158725A5
Authority
FR
France
Prior art keywords
garnet
degrees
high frequency
binder
ferromagnetic garnet
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
FR7139039A
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7139039A priority Critical patent/FR2158725A5/en
Application granted granted Critical
Publication of FR2158725A5 publication Critical patent/FR2158725A5/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
    • C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets

Landscapes

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

Abstract

Polycrystalline ferromagnetic garnet of formula: Y3-3x-3y Gd3x Dy3y Fe5O12 (where 0.3= x =0.04 and 0.15 = y =0.03) is mfd. with a crystallite size of 2 mu and a porosity of a few % by mixing the appropriate high purity oxides, wet grinding, drying, adding aq. org. binder, granulating pressing, heating to remove binder (500-660 degrees C) and fritting at 0.5 t/cm2 and 1200 degrees C for 1 hr. Garnet finds use in wave guide technology and overcomes non-linearity and magnetic loss at 10GHz.
FR7139039A 1971-10-29 1971-10-29 Ferromagnetic garnet - for use at high frequency Expired FR2158725A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7139039A FR2158725A5 (en) 1971-10-29 1971-10-29 Ferromagnetic garnet - for use at high frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7139039A FR2158725A5 (en) 1971-10-29 1971-10-29 Ferromagnetic garnet - for use at high frequency

Publications (1)

Publication Number Publication Date
FR2158725A5 true FR2158725A5 (en) 1973-06-15

Family

ID=9085125

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7139039A Expired FR2158725A5 (en) 1971-10-29 1971-10-29 Ferromagnetic garnet - for use at high frequency

Country Status (1)

Country Link
FR (1) FR2158725A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115331907A (en) * 2022-09-01 2022-11-11 南京金宁微波有限公司 Gyromagnetic ferrite material applied to high-power microwave device and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115331907A (en) * 2022-09-01 2022-11-11 南京金宁微波有限公司 Gyromagnetic ferrite material applied to high-power microwave device and preparation method thereof
CN115331907B (en) * 2022-09-01 2023-11-21 南京金宁微波有限公司 Gyromagnetic ferrite material applied to high-power microwave device and preparation method thereof

Similar Documents

Publication Publication Date Title
GB1273419A (en) Process for producing ceramic materials
CA951014A (en) Stacked magnetic head with removable tips
FR2158725A5 (en) Ferromagnetic garnet - for use at high frequency
CA944824A (en) Air cooled magnetic structure for use in high frequency welding and heating
ES405094A1 (en) Luminescent lithium silicate activated with trivalent cerium
CA995874A (en) Magnetic iron oxides and production thereof
CA957162A (en) Process for adiabatically oxidizing carbonaceous fuel
JPS51134898A (en) Cd, ca, zr displaced yttrium iron garnet
JPS5271700A (en) Production of dielectric material for microwave use
CA966861A (en) Refractory binder and concretes
JPS51116355A (en) Gasket having graphite
JPS5376394A (en) Manufacturing of high-density ferrite
GB1321511A (en) Sintered ferrite having a garnet structure for high frequency
CA663538A (en) Process for the preparation of aluminum oxide and carbon based briquettes
AU290023B2 (en) Use of kiln gas for production of magnetic iron oxide
AU135646B2 (en) Improved iron oxide type catalyst and conversion process using such catalyst
GB1395307A (en) Ferrites
AU437163B2 (en) Treating red slurry and other slurries containing ferric oxide by reduction
AU4429564A (en) Use of kiln gas for production of magnetic iron oxide
AU1250347A (en) Improved iron oxide type catalyst and conversion process using such catalyst
FR2127585A5 (en) Gypsum plaster - of improved stability contains esp fine calcined gypsum particles
GB1172968A (en) Improvements in or relating to Nickel-Zinc Ferrites
JPS5229655A (en) High frequency heating device
JPS52152156A (en) Shaping of face plate formation for cathode-ray tube
CA450881A (en) Catalyst and catalytic process

Legal Events

Date Code Title Description
ST Notification of lapse