GB671788A - Ferromagnetic bodies having high insulating properties - Google Patents

Ferromagnetic bodies having high insulating properties

Info

Publication number
GB671788A
GB671788A GB1291650A GB1291650A GB671788A GB 671788 A GB671788 A GB 671788A GB 1291650 A GB1291650 A GB 1291650A GB 1291650 A GB1291650 A GB 1291650A GB 671788 A GB671788 A GB 671788A
Authority
GB
United Kingdom
Prior art keywords
mno
mgo
less
zno
per cent
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
GB1291650A
Inventor
Ernst Albers-Schoenberg
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.)
Steatite Research Corp
Original Assignee
Steatite Research 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
Priority to IT466564D priority Critical patent/IT466564A/it
Application filed by Steatite Research Corp filed Critical Steatite Research Corp
Priority to GB1291650A priority patent/GB671788A/en
Priority to FR1019317D priority patent/FR1019317A/en
Priority to NL153921A priority patent/NL84740C/xx
Priority to CH288866D priority patent/CH288866A/en
Priority to DE1950ST001720 priority patent/DE975187C/en
Publication of GB671788A publication Critical patent/GB671788A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
    • 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
    • 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
    • C04B35/12—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 chromium oxide
    • 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
    • C04B35/2625—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 magnesium
    • 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
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead
    • 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
    • C04B35/42—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 chromites
    • 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
    • C04B35/44—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 aluminates

Abstract

671,788. Magnetic compositions. STEATITE RESEARCH CORPORATION. May 23, 1950, No. 12916/50. Class 38 (ii). A ferromagnetic ferrite composition with a specific resistance of not less than 10<SP>8</SP> ohms-cm., a dielectric p.f. of less than 2 per cent and a firing temperature range below 1400‹ C. has the general formula xMO.Fe 2 O 3 , where M represents two or more other bivalent metal oxides one of which is magnesium oxide, the others form less than 10 per cent by weight of the composition and x/y is between 1.2 and 3. The other oxides may be of manganese, copper or zinc. Examples are given of the production of suitable compositions by grinding together, moulding and firing the following materials: MgO, MnO, Fe 2 O 3 ; MgO, MnO, ZnO, Fe 2 O 3 ; MgO, MgF 2 , MnO, ZnO.
GB1291650A 1950-05-23 1950-05-23 Ferromagnetic bodies having high insulating properties Expired GB671788A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT466564D IT466564A (en) 1950-05-23
GB1291650A GB671788A (en) 1950-05-23 1950-05-23 Ferromagnetic bodies having high insulating properties
FR1019317D FR1019317A (en) 1950-05-23 1950-05-30 Highly insulating ferromagnetic product
NL153921A NL84740C (en) 1950-05-23 1950-06-02
CH288866D CH288866A (en) 1950-05-23 1950-06-05 Ceramic, magnetic molded body with the properties of an insulator.
DE1950ST001720 DE975187C (en) 1950-05-23 1950-06-27 Semiconductors made from ferromagnetic sintered masses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1291650A GB671788A (en) 1950-05-23 1950-05-23 Ferromagnetic bodies having high insulating properties

Publications (1)

Publication Number Publication Date
GB671788A true GB671788A (en) 1952-05-07

Family

ID=10013478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1291650A Expired GB671788A (en) 1950-05-23 1950-05-23 Ferromagnetic bodies having high insulating properties

Country Status (6)

Country Link
CH (1) CH288866A (en)
DE (1) DE975187C (en)
FR (1) FR1019317A (en)
GB (1) GB671788A (en)
IT (1) IT466564A (en)
NL (1) NL84740C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905641A (en) * 1953-12-22 1959-09-22 Philips Corp Method of manufacturing a magnet core having an approximately rectangular hysteresis loop
US2916456A (en) * 1954-01-28 1959-12-08 Philips Corp Magnet cores having a substantially rectangular hysteresis loop
US2925389A (en) * 1954-12-20 1960-02-16 Philips Corp Ferromagnetic cores and method
US3007875A (en) * 1959-06-23 1961-11-07 Steatite Res Corp Square loop ferrites
US3042619A (en) * 1959-12-31 1962-07-03 Ibm Ferrite composition for bistable magnetic circuits
DE1696693B1 (en) * 1958-01-07 1970-07-23 Rca Corp Process for the production of a molded body from a manganese-magnesium-zinc ferrite

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095728B (en) * 1953-07-29 1960-12-22 Siemens Ag Process for the production of ferromagnetic sintered bodies
DE1180847B (en) * 1956-03-28 1964-11-05 Siemens Ag Device for changing the apparent resistance of a capacitor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226347C (en) *
DE227787C (en) *
BE447683A (en) * 1941-10-24
CH247856A (en) * 1943-05-15 1947-03-31 Philips Nv Magnetic core and process for its manufacture.
BE455911A (en) * 1943-05-15
CH260717A (en) * 1943-05-31 1949-03-31 Philips Nv A method of manufacturing a magnetic core, and a magnetic core manufactured by this method.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905641A (en) * 1953-12-22 1959-09-22 Philips Corp Method of manufacturing a magnet core having an approximately rectangular hysteresis loop
US2916456A (en) * 1954-01-28 1959-12-08 Philips Corp Magnet cores having a substantially rectangular hysteresis loop
US2925389A (en) * 1954-12-20 1960-02-16 Philips Corp Ferromagnetic cores and method
DE1696693B1 (en) * 1958-01-07 1970-07-23 Rca Corp Process for the production of a molded body from a manganese-magnesium-zinc ferrite
US3007875A (en) * 1959-06-23 1961-11-07 Steatite Res Corp Square loop ferrites
US3042619A (en) * 1959-12-31 1962-07-03 Ibm Ferrite composition for bistable magnetic circuits

Also Published As

Publication number Publication date
IT466564A (en)
DE975187C (en) 1961-09-21
NL84740C (en) 1956-11-15
FR1019317A (en) 1953-01-20
CH288866A (en) 1953-02-15

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