IT1020146B - Trasduttore perfezionato - Google Patents

Trasduttore perfezionato

Info

Publication number
IT1020146B
IT1020146B IT26546/74A IT2654674A IT1020146B IT 1020146 B IT1020146 B IT 1020146B IT 26546/74 A IT26546/74 A IT 26546/74A IT 2654674 A IT2654674 A IT 2654674A IT 1020146 B IT1020146 B IT 1020146B
Authority
IT
Italy
Prior art keywords
perfected
transducer
perfected transducer
Prior art date
Application number
IT26546/74A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1020146B publication Critical patent/IT1020146B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
    • G11B5/3932—Magnetic biasing films
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors

Landscapes

  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Heads (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Hall/Mr Elements (AREA)
IT26546/74A 1973-10-04 1974-08-23 Trasduttore perfezionato IT1020146B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403702A US3864751A (en) 1973-10-04 1973-10-04 Induced bias magnetoresistive read transducer

Publications (1)

Publication Number Publication Date
IT1020146B true IT1020146B (it) 1977-12-20

Family

ID=23596700

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26546/74A IT1020146B (it) 1973-10-04 1974-08-23 Trasduttore perfezionato

Country Status (12)

Country Link
US (1) US3864751A (it)
JP (1) JPS5337205B2 (it)
BE (1) BE820323A (it)
BR (1) BR7408250D0 (it)
CA (1) CA1033836A (it)
CH (1) CH575697A5 (it)
DE (1) DE2442566C3 (it)
FR (1) FR2246926B1 (it)
GB (1) GB1456070A (it)
IT (1) IT1020146B (it)
NL (1) NL179319C (it)
SE (1) SE400404B (it)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097802A (en) * 1975-06-30 1978-06-27 International Business Machines Corporation Magnetoresistive field sensor with a magnetic shield which prevents sensor response at fields below saturation of the shield
NL7508533A (nl) * 1975-07-17 1977-01-19 Philips Nv Dunne film magneetkop voor het lezen en schrijven van informatie.
US4012781A (en) * 1975-08-14 1977-03-15 International Business Machines Corporation Magnetoresistive read head assembly for servo operation
US4024489A (en) * 1975-11-18 1977-05-17 International Business Machines Corporation Magnetoresistive sandwich including sensor electrically parallel with electrical shunt and magnetic biasing layers
NL7611522A (nl) * 1976-10-19 1978-04-21 Philips Nv Magnetoweerstand leeskop met onderdrukking van thermischhe ruis.
JPS54157610A (en) * 1978-05-26 1979-12-12 Sony Corp Magnetic head
GB2037474B (en) * 1978-12-11 1983-08-24 Racal Recorders Ltd Magneting recording and reproduction
US4255772A (en) * 1979-06-29 1981-03-10 International Business Machines Corporation Read/write magnetic head assembly with magnetoresistive sensor
JPS5613513A (en) * 1979-07-11 1981-02-09 Matsushita Electric Ind Co Ltd Magnetic head and its manufacture
DE3229774A1 (de) * 1981-08-10 1983-03-24 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Magnetoresistives element
JPS58166527A (ja) * 1982-03-29 1983-10-01 Nec Corp 磁気抵抗効果ヘツド
US4504787A (en) * 1982-04-05 1985-03-12 Honeywell Inc. Electronic watthour meter
US4613918A (en) * 1982-04-14 1986-09-23 Matsushita Electric Industrial Co., Ltd. Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device
US4599668A (en) * 1983-06-15 1986-07-08 Eastman Kodak Company Inductively-coupled, thin-film M-R head
JPS6047223A (ja) * 1983-08-25 1985-03-14 Sony Corp 磁気抵抗効果型磁気ヘツド
US4663684A (en) * 1984-01-27 1987-05-05 Hitachi, Ltd. Magnetic transducer using magnetoresistance effect
US4663685A (en) * 1985-08-15 1987-05-05 International Business Machines Magnetoresistive read transducer having patterned longitudinal bias
US4649447A (en) * 1985-08-15 1987-03-10 International Business Machines Combed MR sensor
JPS6266935U (it) * 1985-10-11 1987-04-25
JPH07105006B2 (ja) * 1985-11-05 1995-11-13 ソニー株式会社 磁気抵抗効果型磁気ヘツド
JPS62184616A (ja) * 1986-02-10 1987-08-13 Hitachi Ltd 磁気抵抗効果型磁気ヘツド
US4713708A (en) * 1986-10-31 1987-12-15 International Business Machines Magnetoresistive read transducer
US4771349A (en) * 1986-10-31 1988-09-13 International Business Machine Corporation Magnetoresistive read transducer
US4857418A (en) * 1986-12-08 1989-08-15 Honeywell Inc. Resistive overlayer for magnetic films
US4754431A (en) * 1987-01-28 1988-06-28 Honeywell Inc. Vialess shorting bars for magnetoresistive devices
US4967298A (en) * 1987-02-17 1990-10-30 Mowry Greg S Magnetic head with magnetoresistive sensor, inductive write head, and shield
US4796106A (en) * 1987-05-29 1989-01-03 Eastman Kodak Company a.c. Self-biased magnetoresistive reproduce head utilizing second harmonic signal detection
US4833560A (en) * 1987-06-26 1989-05-23 Eastman Kodak Company Self-biased magnetoresistive reproduce head
US4940511A (en) * 1988-03-28 1990-07-10 International Business Machines Corporation Method for making a magnetoresistive read transducer
US4879619A (en) * 1988-03-28 1989-11-07 International Business Machines Corporation Magnetoresistive read transducer
US5218497A (en) * 1988-12-02 1993-06-08 Hitachi, Ltd. Magnetic recording-reproducing apparatus and magnetoresistive head having two or more magnetoresistive films for use therewith
US5258884A (en) * 1991-10-17 1993-11-02 International Business Machines Corporation Magnetoresistive read transducer containing a titanium and tungsten alloy spacer layer
US5311385A (en) * 1991-12-18 1994-05-10 Minnesota Mining And Manufacturing Company Magnetoresistive head with integrated bias and magnetic shield layer
DE69316438T2 (de) * 1992-05-18 1998-08-27 Nec Corp Magnetoresistives Element
JPH0653039A (ja) * 1992-08-03 1994-02-25 Hitachi Ltd 耐食性磁性膜およびこれを用いた磁気ヘッド
JPH06162450A (ja) * 1992-11-19 1994-06-10 Matsushita Electric Ind Co Ltd 磁気抵抗効果型ヘッド及びその製造方法
KR950008750B1 (ko) * 1993-02-05 1995-08-04 대우전자주식회사 준고정 헤드 영상 신호 기록 및 재생 장치
JPH06318516A (ja) * 1993-05-06 1994-11-15 Mitsubishi Electric Corp 軟磁性多層膜およびこれを用いた磁気ヘッド
US5723198A (en) * 1993-06-11 1998-03-03 Hitachi, Ltd. Multi-layered magnetic recording medium and magnetic recording system employing the same
KR100234176B1 (ko) * 1995-06-30 1999-12-15 이형도 자기 저항소자 및 그 제조방법
US6249406B1 (en) 1996-09-23 2001-06-19 International Business Machines Corporation Magnetoresistive sensor with a soft adjacent layer having high magnetization, high resistivity, low intrinsic anisotropy and near zero magnetostriction
US5920980A (en) * 1997-03-05 1999-07-13 Headway Technologies, Inc. Method of making a soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL)
US5985162A (en) * 1997-03-05 1999-11-16 Headway Technologies, Inc. Method for forming soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL)
KR100434484B1 (ko) * 1997-12-30 2004-07-16 삼성전자주식회사 소프트 어제이션트 레이어로 바이어스된 자기 저항 헤드
US6007731A (en) * 1998-03-23 1999-12-28 Headway Technologies, Inc. Soft adjacent layer (SAL) magnetoresistive (MR) sensor element with electrically insulated soft adjacent layer (SAL)
JP2000030224A (ja) 1998-07-13 2000-01-28 Tdk Corp 磁気抵抗効果素子、薄膜磁気ヘッドおよびそれらの製造方法
US6583971B1 (en) * 1999-03-09 2003-06-24 Sae Magnetics (Hk) Ltd. Elimination of electric-pop noise in MR/GMR device
US7672659B2 (en) * 2002-04-04 2010-03-02 Telefonaktiebolaget L M Ericsson (Publ) Mixer with feedback
US7054609B2 (en) * 2002-04-04 2006-05-30 Telefonaktiebolaget Lm Ericsson (Publ) Linearity improvement of Gilbert mixers
US20040245985A1 (en) * 2003-06-03 2004-12-09 Glenn Mayfield apparatus for monitoring changes in a magnetic field

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493694A (en) * 1966-01-19 1970-02-03 Ampex Magnetoresistive head
FR2018239A1 (it) * 1968-09-17 1970-05-29 Pioneer Electronic Corp
US3731007A (en) * 1971-04-19 1973-05-01 Denki Onkyo Co Ltd Magnetic head having a magneto-resistive bridge circuit
US3716781A (en) * 1971-10-26 1973-02-13 Ibm Magnetoresistive sensing device for detection of magnetic fields having a shape anisotropy field and uniaxial anisotropy field which are perpendicular
FR2165206A5 (it) * 1971-12-22 1973-08-03 Cii

Also Published As

Publication number Publication date
FR2246926A1 (it) 1975-05-02
DE2442566A1 (de) 1975-04-30
JPS5065213A (it) 1975-06-02
BR7408250D0 (pt) 1975-07-29
AU7326174A (en) 1976-03-18
US3864751A (en) 1975-02-04
SE7411851L (it) 1975-04-05
BE820323A (fr) 1975-01-16
CH575697A5 (it) 1976-05-14
DE2442566C3 (de) 1981-12-17
JPS5337205B2 (it) 1978-10-07
DE2442566B2 (de) 1981-04-16
FR2246926B1 (it) 1979-03-09
GB1456070A (en) 1976-11-17
SE400404B (sv) 1978-03-20
CA1033836A (en) 1978-06-27
NL7413097A (nl) 1975-04-08
NL179319C (nl) 1986-08-18

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