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EP1921638A3 - Hexagonal Z-type ferrite sintered body and manufacturing method thereof - Google Patents

Hexagonal Z-type ferrite sintered body and manufacturing method thereof Download PDF

Info

Publication number
EP1921638A3
EP1921638A3 EP07020704A EP07020704A EP1921638A3 EP 1921638 A3 EP1921638 A3 EP 1921638A3 EP 07020704 A EP07020704 A EP 07020704A EP 07020704 A EP07020704 A EP 07020704A EP 1921638 A3 EP1921638 A3 EP 1921638A3
Authority
EP
European Patent Office
Prior art keywords
hexagonal
sintered body
hkl
ferrite sintered
type ferrite
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.)
Withdrawn
Application number
EP07020704A
Other languages
German (de)
French (fr)
Other versions
EP1921638A2 (en
Inventor
Tomotsugu Kato
Hideto Mikami
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of EP1921638A2 publication Critical patent/EP1921638A2/en
Publication of EP1921638A3 publication Critical patent/EP1921638A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
    • H01F10/20—Ferrites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Magnetic Ceramics (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The ferrite sintered body of the present invention is a hexagonal Z-type ferrite sintered body having a high permeability and a low anisotropy of permeability, comprising a c-axis-oriented plane in which a degree of orientation fc┴ is not less than 0.4, said degree of orientation being given as fc┴ = ΣI(HK0)/ΣI(HKL), when I(HKL) is the integrated intensity of a diffraction peak represented by an index (HKL) in an X-ray diffraction pattern of which measurement range is 2θ = 20 to 80°, wherein the degree of orientation fc// calculated from fc// = I(0018)/I(110) in an X-ray diffraction is not less than 0.3 in at least two planes which are perpendicular to the aforementioned c-axis-oriented plane and are perpendicular to each other. Where ΣI(HKL) is the sum of integrated intensity of all the diffraction peaks of hexagonal Z-type ferrite.
EP07020704A 2006-10-25 2007-10-23 Hexagonal Z-type ferrite sintered body and manufacturing method thereof Withdrawn EP1921638A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006289685 2006-10-25
JP2007091193A JP2008133166A (en) 2006-10-25 2007-03-30 Hexagonal z-type ferrite sintered body and manufacturing method thereof

Publications (2)

Publication Number Publication Date
EP1921638A2 EP1921638A2 (en) 2008-05-14
EP1921638A3 true EP1921638A3 (en) 2010-02-10

Family

ID=39091825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07020704A Withdrawn EP1921638A3 (en) 2006-10-25 2007-10-23 Hexagonal Z-type ferrite sintered body and manufacturing method thereof

Country Status (4)

Country Link
US (1) US20080101979A1 (en)
EP (1) EP1921638A3 (en)
JP (1) JP2008133166A (en)
KR (1) KR20080037521A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008062757A1 (en) 2006-11-21 2008-05-29 Ulvac, Inc. Process for producing oriented object, molded object, and sintered object and process for producing permanent magnet
US20090304833A1 (en) 2007-01-11 2009-12-10 Hiroshi Nagata Molding apparatus
JP5212305B2 (en) * 2009-08-05 2013-06-19 株式会社村田製作所 Magnetic material and coil parts using it
JP2012099523A (en) 2010-10-29 2012-05-24 Shin Etsu Chem Co Ltd Anisotropic rare earth sintered magnet and method for manufacturing the same
US8609062B2 (en) 2010-12-07 2013-12-17 Skyworks Solutions, Inc. Specialty materials processing techniques for enhanced resonant frequency hexaferrite materials for antenna applications and other electronic devices
WO2012103020A2 (en) * 2011-01-24 2012-08-02 Skyworks Solutions, Inc. Specialty materials processing techniques for enhanced resonant frequency hexaferrite materials for antenna applications and other electronic devices
KR20130001984A (en) * 2011-06-28 2013-01-07 삼성전기주식회사 Gap composition of multi layered power inductor and multi layered power inductor comprising gap layer using the same
KR101736734B1 (en) * 2015-06-01 2017-05-17 주식회사 이엠따블유 Ferrite sheet, preparation method thereof and electronic part comprising the same
CN113744991B (en) * 2021-09-17 2022-10-11 横店集团东磁股份有限公司 Co2Z type ferrite material and preparation method and application thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593612A (en) * 1990-11-30 1997-01-14 The United States Of America As Represented By The Secretary Of The Navy U, W, X, Y and Z-type ferrites
EP2028663A1 (en) * 2006-03-29 2009-02-25 Hitachi Metals, Ltd. Coil component and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5593612A (en) * 1990-11-30 1997-01-14 The United States Of America As Represented By The Secretary Of The Navy U, W, X, Y and Z-type ferrites
EP2028663A1 (en) * 2006-03-29 2009-02-25 Hitachi Metals, Ltd. Coil component and its manufacturing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TAKADA YUKIO ET AL: "Crystal and magnetic structures and their temperature dependence of Co2Z-type hexaferrite (Ba,Sr)3Co2Fe24O41 by high-temperature neutron diffraction", JOURNAL OF APPLIED PHYSICS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 100, no. 4, 18 August 2006 (2006-08-18), pages 43904 - 043904, XP012089759, ISSN: 0021-8979 *

Also Published As

Publication number Publication date
US20080101979A1 (en) 2008-05-01
JP2008133166A (en) 2008-06-12
KR20080037521A (en) 2008-04-30
EP1921638A2 (en) 2008-05-14

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