ES233159A1 - MEJORAS INTRODUCIDAS EN LA PREPARACIoN DE MATERIALES FERROMAGNÉTICOS - Google Patents

MEJORAS INTRODUCIDAS EN LA PREPARACIoN DE MATERIALES FERROMAGNÉTICOS

Info

Publication number
ES233159A1
ES233159A1 ES0233159A ES233159A ES233159A1 ES 233159 A1 ES233159 A1 ES 233159A1 ES 0233159 A ES0233159 A ES 0233159A ES 233159 A ES233159 A ES 233159A ES 233159 A1 ES233159 A1 ES 233159A1
Authority
ES
Spain
Prior art keywords
ion
ferromagnetic materials
preparing
methods
same
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
ES0233159A
Other languages
English (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES233159A1 publication Critical patent/ES233159A1/es
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
    • C04B35/2608—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
    • C04B35/2633—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 barium, strontium or calcium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Mejoras introducidas en la preparación de materiales ferromagnéticos más en particular para cuerpos ferromagnéticos usados a frecuencias de por lo menos 50 MC/s caracterizadas porque consisten sustancialmente en cristales mixtos con una estructura similar a la del compuesto BaFe12O19 y con la fórmula: **(ver fórmula)** en la que a está comprendido entre 1 0 y 1 6 y en que el ion bario puede ser reemplazado total o parcialmente por un ion Sr el ión Pb y/o en como máximo 40% atómicos por el ión Ca.
ES0233159A 1956-01-24 1957-01-21 MEJORAS INTRODUCIDAS EN LA PREPARACIoN DE MATERIALES FERROMAGNÉTICOS Expired ES233159A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL203910 1956-01-24

Publications (1)

Publication Number Publication Date
ES233159A1 true ES233159A1 (es) 1957-07-01

Family

ID=19750738

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0233159A Expired ES233159A1 (es) 1956-01-24 1957-01-21 MEJORAS INTRODUCIDAS EN LA PREPARACIoN DE MATERIALES FERROMAGNÉTICOS

Country Status (8)

Country Link
US (1) US2960471A (es)
BE (1) BE554425A (es)
CH (1) CH369833A (es)
DE (1) DE1185103B (es)
ES (1) ES233159A1 (es)
FR (1) FR1164977A (es)
GB (1) GB833007A (es)
NL (1) NL97514C (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270374A (es) * 1960-10-18
DE1276534B (de) * 1965-05-10 1968-08-29 Philips Patentverwaltung Verfahren zur Herstellung eines ferromagnetischen Ferritmaterials mit hexagonaler Kristallstruktur
US3638207A (en) * 1969-11-17 1972-01-25 Bell Telephone Labor Inc Magnetic devices
JPS60137002A (ja) * 1983-12-26 1985-07-20 Toda Kogyo Corp 磁気記録用板状Ｂａフエライト微粒子粉末の製造法
DE3518481A1 (de) * 1985-05-23 1986-11-27 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger und nadelfoermiger hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger und plastoferrite
US20030231437A1 (en) * 2002-06-17 2003-12-18 Childress Jeffrey R. Current-perpendicular-to-plane magnetoresistive device with oxidized free layer side regions and method for its fabrication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA514251A (en) * 1955-06-28 Woodcock Jack Ceramic dielectrics comprising essentially titania
US2656319A (en) * 1949-01-03 1953-10-20 Aladdin Ind Inc Magnetic core composition and method of producing the same
BE504686A (es) * 1950-09-19
US2736708A (en) * 1951-06-08 1956-02-28 Henry L Crowley & Company Inc Magnetic compositions
BE516395A (es) * 1951-12-21

Also Published As

Publication number Publication date
CH369833A (de) 1963-06-15
DE1185103B (de) 1965-01-07
US2960471A (en) 1960-11-15
GB833007A (en) 1960-04-21
BE554425A (es) 1957-07-23
FR1164977A (fr) 1958-10-16
NL97514C (es) 1961-04-17

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