GB1077427A - Method of producing magnetic materials with low dielectric losses for use at microwave frequencies - Google Patents

Method of producing magnetic materials with low dielectric losses for use at microwave frequencies

Info

Publication number
GB1077427A
GB1077427A GB1363465A GB1363465A GB1077427A GB 1077427 A GB1077427 A GB 1077427A GB 1363465 A GB1363465 A GB 1363465A GB 1363465 A GB1363465 A GB 1363465A GB 1077427 A GB1077427 A GB 1077427A
Authority
GB
United Kingdom
Prior art keywords
iron
dielectric losses
low dielectric
magnetic materials
microwave frequencies
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
GB1363465A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1077427A publication Critical patent/GB1077427A/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)
  • Magnetic Ceramics (AREA)

Abstract

1,077,427. Magnetic compositions. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. March 31, 1965 [April 4, 1964], No. 13634/65. Heading H1H. A ferromagnetic yttrium iron garnet in which some iron is replaced by aluminium or gallium, also has some further iron replaced by indium and is given by the formula 3Y 2 O 3 .(5-x-y)Fe 2 O 3 .x(Al 2 O 3 ,Ga 2 O 3 ).yIn 2 O 3 where y is between 0.005 and 0.6, and is between 0 and 1.5. In preparation pure materials are utilized and allowance is made in assessing the Fe 2 O 3 content for iron produced in grinding. The oxides other than Fe 2 O 3 are initially in the form of oxide-yielding compounds. The initial materials are mixed, extensively ground, presintered, mixed with a binder, pressed into shape under 2 tons/sq. cm., and sintered between 1400‹ and 1460‹ C. in air or oxygen for four hours. The parts formed may be used for microwave purposes and the presence of the indium oxide has the effect of reducing dielectric losses.
GB1363465A 1964-04-04 1965-03-31 Method of producing magnetic materials with low dielectric losses for use at microwave frequencies Expired GB1077427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET25955A DE1223289B (en) 1964-04-04 1964-04-04 Process for the production of magnetic materials with low dielectric losses for use at microwave frequencies

Publications (1)

Publication Number Publication Date
GB1077427A true GB1077427A (en) 1967-07-26

Family

ID=7552430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1363465A Expired GB1077427A (en) 1964-04-04 1965-03-31 Method of producing magnetic materials with low dielectric losses for use at microwave frequencies

Country Status (3)

Country Link
DE (1) DE1223289B (en)
GB (1) GB1077427A (en)
SE (1) SE320922B (en)

Also Published As

Publication number Publication date
SE320922B (en) 1970-02-16
DE1223289B (en) 1966-08-18

Similar Documents

Publication Publication Date Title
GB1143448A (en) Improvements in or relating to manganese-zinc-ferrites
GB995374A (en) Permanent magnet materials having a strontium ferrite base and processes for their preparation
GB679349A (en) Improvements in and relating to magnetically soft mixed ferrite materials
GB823971A (en) Improvements in or relating to ferromagnetic ferrite materials
GB1142104A (en) Improvements in or relating to ferromagnetic high-permeability manganese-zinc-ferrite cores
GB759245A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB842005A (en) Improvements in or relating to ferromagnetic materials
GB1077427A (en) Method of producing magnetic materials with low dielectric losses for use at microwave frequencies
GB1066453A (en) Ferrimagnetic compositions
GB1205539A (en) Microwave ferrites
GB1060598A (en) Ferromagnetic cores and processes for the preparation thereof
GB764118A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB1351737A (en) Ferrites
GB1317250A (en) Ferrite materials
GB789099A (en) Improvements in or relating to a method of producing magnetic cores
GB759248A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB1216675A (en) Permanent magnet material having strontium ferrite base
GB1366541A (en) Method of manufacturing a ferrite magnet
GB988836A (en) Improvements in or relating to permanent magnet materials
GB677418A (en) Ceramic ferromagnetic body with high maximum permeability
GB1321511A (en) Sintered ferrite having a garnet structure for high frequency
GB911642A (en) Improvements in or relating to ferromagnetic materials
GB1092009A (en) Magnetic ferrite materials
GB1462305A (en) High frequency magnetic materials
GB669571A (en) Improvements in or relating to magnet cores for electromagnetic devices