GB836257A - Improvements in or relating to electrical inductance devices and magnetizable cores therefor - Google Patents

Improvements in or relating to electrical inductance devices and magnetizable cores therefor

Info

Publication number
GB836257A
GB836257A GB34894/57A GB3489457A GB836257A GB 836257 A GB836257 A GB 836257A GB 34894/57 A GB34894/57 A GB 34894/57A GB 3489457 A GB3489457 A GB 3489457A GB 836257 A GB836257 A GB 836257A
Authority
GB
United Kingdom
Prior art keywords
iron
pict
cooled
iii
hours
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
GB34894/57A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB836257A publication Critical patent/GB836257A/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)
  • Compounds Of Iron (AREA)

Abstract

<PICT:0836257/III/1> <PICT:0836257/III/2> An inductor or transformer includes a core made from a single crystal of magnetic material possessing a garnet-like structure having the formula A3B5O12 where A is yttrium or any one of the rare earth elements having atomic numbers from 62 to 71 or mixtures thereof, OB is iron or iron diluted with aluminium, gallium, scandium or chromium. The core material exhibits cubic crystal structure. Y3Fe5 O12 was made by heating at 1325 DEG C. for five hours, appropriate amounts of PbO3, Fe2O3 and Y2O3 in a platinum crucible in an atmosphere consisting mainly of oxygen for five hours. The composition was cooled at 5 DEG C. per hour to 900 DEG C. and the cooled in air at room temperature. The lead oxide phase was removed by 6-N nitric acid and the yttrium iron garnet crystals were separated from those of magneto-plumbite by morphological examination.
GB34894/57A 1956-11-09 1957-11-08 Improvements in or relating to electrical inductance devices and magnetizable cores therefor Expired GB836257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US621276A US2938183A (en) 1956-11-09 1956-11-09 Single crystal inductor core of magnetizable garnet

Publications (1)

Publication Number Publication Date
GB836257A true GB836257A (en) 1960-06-01

Family

ID=24489504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34894/57A Expired GB836257A (en) 1956-11-09 1957-11-08 Improvements in or relating to electrical inductance devices and magnetizable cores therefor

Country Status (2)

Country Link
US (1) US2938183A (en)
GB (1) GB836257A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558662A (en) * 1957-06-24
US3040184A (en) * 1958-07-01 1962-06-19 Bell Telephone Labor Inc Translation device having ferromagnetic core
US3154766A (en) * 1959-03-06 1964-10-27 Burroughs Corp Magnetic film nondestructive read-out
US3051656A (en) * 1959-05-08 1962-08-28 Kramarsky Bernhard Method of preparing magnetic garnet crystals
US3091540A (en) * 1959-08-25 1963-05-28 Bell Telephone Labor Inc Garnet gemstones
US3050407A (en) * 1959-08-25 1962-08-21 Bell Telephone Labor Inc Single crystal garnets
US3039963A (en) * 1960-02-25 1962-06-19 Grace W R & Co Method of preparing ferrimagnetic materials
US3131082A (en) * 1962-02-01 1964-04-28 Gen Electric Rare earth-iron garnet preparation
US3356929A (en) * 1964-07-01 1967-12-05 Bell Telephone Labor Inc Microwave devices utilizing eu-fe garnet containing ga
US3444084A (en) * 1964-09-30 1969-05-13 Bell Telephone Labor Inc Garnet compositions
US3296555A (en) * 1964-10-08 1967-01-03 Bell Telephone Labor Inc Temperature-stable sonic transmission elements comprising crystalline materials containing jahn-teller ions
US3518636A (en) * 1965-01-26 1970-06-30 North American Rockwell Ferrite memory device
US3496108A (en) * 1966-11-15 1970-02-17 Bell Telephone Labor Inc Hydrothermal growth of magnetic garnets and materials so produced
DE102004041650B4 (en) * 2004-08-27 2006-10-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheological materials with high switching factor and their use
DE102004041649B4 (en) * 2004-08-27 2006-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheological elastomers and their use
DE102004041651B4 (en) * 2004-08-27 2006-10-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Magnetorheological materials with magnetic and non-magnetic inorganic additives and their use
DE102007017589B3 (en) * 2007-04-13 2008-10-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Damping device with field-controllable fluid

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677663A (en) * 1949-02-05 1954-05-04 Hartford Nat Bank & Trust Co Manganite composition
US2692978A (en) * 1951-10-05 1954-10-26 Bell Telephone Labor Inc Ferrite inductor
BE521244A (en) * 1952-07-07

Also Published As

Publication number Publication date
US2938183A (en) 1960-05-24

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