KR900015190A - 보자력에 대한 온도의존성이 작은 미분쇄된 마그네틱 헥사페라이트 및 이의 용도 - Google Patents

보자력에 대한 온도의존성이 작은 미분쇄된 마그네틱 헥사페라이트 및 이의 용도 Download PDF

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Publication number
KR900015190A
KR900015190A KR1019900003190A KR900003190A KR900015190A KR 900015190 A KR900015190 A KR 900015190A KR 1019900003190 A KR1019900003190 A KR 1019900003190A KR 900003190 A KR900003190 A KR 900003190A KR 900015190 A KR900015190 A KR 900015190A
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KR
South Korea
Prior art keywords
finely ground
temperature dependence
coercivity
ground magnetic
hexaferrite
Prior art date
Application number
KR1019900003190A
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English (en)
Inventor
마이젠 울리히
아일링 알로이스
Original Assignee
클라우스 댄너, 요아힘 그렘
바이엘 아크티엔게젤샤프트
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 클라우스 댄너, 요아힘 그렘, 바이엘 아크티엔게젤샤프트 filed Critical 클라우스 댄너, 요아힘 그렘
Publication of KR900015190A publication Critical patent/KR900015190A/ko

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/12—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/10—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles

Abstract

내용 없음.

Description

보자력에 대한 온도의존성이 작은 미분쇄된 마그네틱 헥사페라이트 및 이의 용도
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 실험식(Ⅰ)의 조성을 갖는 바륨 페라이트에 대한 온도의 함수와 실험식(Ⅱ)의 조성을 갖는 바륨 페라이트의 iHc의 온도의존성의 함수로서 나타낸 보자력의 변화도이다.

Claims (3)

  1. 20내지 100℃의 범위에서 보자력(iHc)의 온도의존성이 0.0내지 160A/m/K인 일반식(Ⅰ)의 조성을 갖는 미분쇄된 마그네틱 헥사페라이트.
    M(Ⅰ)XxMgyIiZFe12-(y+Z)O19(Ⅰ)
    상기식에서, x는 0.5이상 1.3미만이고, y+z는 0.1이상 3이하이며, X+z는 1.0이상이며, y및 z는 0.0이상 1.5이하이며, M(Ⅰ)은 Ba, Sr, Pb또는 Ca를 나타낸다.
  2. 제1항의 미분쇄된 마그네틱 헥사페라이트를 함유하는 마그네틱 표식물 및 지폐.
  3. 제1항에 따르는 미분쇄된 마그네틱 헥사페라이트를 함유하는 자기녹음 물질.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900003190A 1989-03-11 1990-03-10 보자력에 대한 온도의존성이 작은 미분쇄된 마그네틱 헥사페라이트 및 이의 용도 KR900015190A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3907914.7 1989-03-11
DE3907914A DE3907914A1 (de) 1989-03-11 1989-03-11 Feinteilige magnetische hexaferrite mit geringer temperaturabhaengigkeit der koerzitivkraft sowie deren verwendung

Publications (1)

Publication Number Publication Date
KR900015190A true KR900015190A (ko) 1990-10-26

Family

ID=6376090

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900003190A KR900015190A (ko) 1989-03-11 1990-03-10 보자력에 대한 온도의존성이 작은 미분쇄된 마그네틱 헥사페라이트 및 이의 용도

Country Status (4)

Country Link
EP (1) EP0387573A1 (ko)
JP (1) JPH02284402A (ko)
KR (1) KR900015190A (ko)
DE (1) DE3907914A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101246167B1 (ko) * 2011-01-25 2013-03-21 주식회사 이엠따블유 복합 페라이트 성형체 및 이의 제조방법

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69418127T2 (de) * 1993-10-04 1999-10-14 Matsushita Electric Ind Co Ltd Filter und Zweimodenresonator in Streifenleiter-Technik
JPH0856107A (ja) 1994-08-11 1996-02-27 Matsushita Electric Ind Co Ltd デュアルモード共振器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140823A (ja) * 1984-07-31 1986-02-27 Dowa Mining Co Ltd マグネトプランバイト型フエライトの水熱合成法
FR2574397B1 (fr) * 1984-12-11 1987-01-09 Centre Nat Rech Scient Procede de preparation de ferrites hexagonales aimantees - utilisation de ces ferrites comme materiaux de base pour aimants ou pour l'enregistrement magnetique
DE3724379A1 (de) * 1987-07-23 1989-02-02 Bayer Ag Verfahren zur herstellung feinteiliger magnetischer hexaferritpigmente

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101246167B1 (ko) * 2011-01-25 2013-03-21 주식회사 이엠따블유 복합 페라이트 성형체 및 이의 제조방법

Also Published As

Publication number Publication date
EP0387573A1 (de) 1990-09-19
DE3907914A1 (de) 1990-09-13
JPH02284402A (ja) 1990-11-21

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