ES420322A1 - Read-write magnetic transducer having a composite structure comprising a stack of thin films - Google Patents

Read-write magnetic transducer having a composite structure comprising a stack of thin films

Info

Publication number
ES420322A1
ES420322A1 ES420322A ES420322A ES420322A1 ES 420322 A1 ES420322 A1 ES 420322A1 ES 420322 A ES420322 A ES 420322A ES 420322 A ES420322 A ES 420322A ES 420322 A1 ES420322 A1 ES 420322A1
Authority
ES
Spain
Prior art keywords
read
magnetic transducer
stack
thin films
composite structure
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
ES420322A
Other languages
Spanish (es)
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.)
Compagnie Internationale pour lInformatique
Original Assignee
Compagnie Internationale pour lInformatique
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 Compagnie Internationale pour lInformatique filed Critical Compagnie Internationale pour lInformatique
Publication of ES420322A1 publication Critical patent/ES420322A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetic Heads (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)

Abstract

Each pole-piece of a read-write magnetic transducer having a geometrical airgap defined by a pair of pole-pieces and wherein passes a part of a read-write flat winging comprises a first layer made of magnetically soft material adjacent to the airgap and a second layer made of magnetically hard material with an intervening layer of a structure ensuring de-coupling of the magnetizations of the said soft and hard magnetic material layers.
ES420322A 1972-11-07 1973-11-07 Read-write magnetic transducer having a composite structure comprising a stack of thin films Expired ES420322A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7239317A FR2205701B1 (en) 1972-11-07 1972-11-07

Publications (1)

Publication Number Publication Date
ES420322A1 true ES420322A1 (en) 1976-03-16

Family

ID=9106735

Family Applications (1)

Application Number Title Priority Date Filing Date
ES420322A Expired ES420322A1 (en) 1972-11-07 1973-11-07 Read-write magnetic transducer having a composite structure comprising a stack of thin films

Country Status (9)

Country Link
US (1) US3867368A (en)
BE (1) BE806212A (en)
DE (1) DE2355672C3 (en)
ES (1) ES420322A1 (en)
FR (1) FR2205701B1 (en)
GB (1) GB1453288A (en)
HU (1) HU169854B (en)
IT (1) IT999733B (en)
NL (1) NL7314869A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2264350B1 (en) * 1974-03-11 1978-09-29 Cii
JPS51117020A (en) * 1975-04-07 1976-10-14 Hitachi Ltd Magnetic head and production method of it
US4191983A (en) * 1977-06-24 1980-03-04 Applied Magnetics Corporation Thin film magnetic head assembly having a thin film magnetic transducer encapsulated in insulating bonding material
US4321641A (en) * 1977-09-02 1982-03-23 Magnex Corporation Thin film magnetic recording heads
US4195323A (en) * 1977-09-02 1980-03-25 Magnex Corporation Thin film magnetic recording heads
GB2003647B (en) * 1977-09-02 1982-05-06 Magnex Corp Thin film magnetic recording heads
US4156882A (en) * 1977-12-15 1979-05-29 Texas Instruments Incorporated Magnetic transducer
US4374403A (en) * 1979-06-27 1983-02-15 Matsushita Electric Industrial Co., Ltd. Magnetic recording and reproducing system
DE3424651A1 (en) * 1983-11-04 1985-05-15 Control Data Corp., Minneapolis, Minn. MAGNETIC CONVERTER HEAD
DE3888680T2 (en) * 1987-12-04 1994-09-08 Digital Equipment Corp FINED POLE FOR MAGNETIC HEADS.
US5108837A (en) * 1987-12-04 1992-04-28 Digital Equipment Corporation Laminated poles for recording heads
US4897749A (en) * 1988-03-16 1990-01-30 Magnetic Peripherals Inc. Combination probe and ring head for vertical recording
US5065326A (en) * 1989-08-17 1991-11-12 Caterpillar, Inc. Automatic excavation control system and method
JPH0383213A (en) * 1989-08-24 1991-04-09 Matsushita Electric Ind Co Ltd Thin film magnetic head
US5132859A (en) * 1990-08-23 1992-07-21 International Business Machines Corporation Thin film structures for magnetic recording heads
US6259583B1 (en) 1998-09-16 2001-07-10 International Business Machines, Corporation Laminated yoke head with a domain control element
US7369360B2 (en) * 2004-11-05 2008-05-06 Seagate Technology Llc Perpendicular recording head having controlled permeability and saturation moment
US8329320B2 (en) * 2008-11-13 2012-12-11 Headway Technologies, Inc. Laminated high moment film for head applications

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344237A (en) * 1967-09-26 Desposited film transducing apparatus and method op producing the apparatus
US3549825A (en) * 1967-09-18 1970-12-22 Ncr Co Magnetic transducer with planar spiral coil extending into the gap
US3564558A (en) * 1968-08-26 1971-02-16 Sperry Rand Corp High-density magnetic recording scheme
US3611417A (en) * 1969-07-30 1971-10-05 Sperry Rand Corp High-density magnetic recording method
BE758053A (en) * 1969-10-28 1971-04-01 Commissariat Energie Atomique INTEGRATED MAGNETIC HEAD AND METHOD FOR MANUFACTURING THE SAID HEAD
US3700827A (en) * 1970-01-31 1972-10-24 Nippon Electric Co Magnetic head including thin magnetic film separated by a gap spacer
US3639699A (en) * 1970-02-27 1972-02-01 Gen Electric Magnetic transducer having a composite magnetic core structure

Also Published As

Publication number Publication date
DE2355672A1 (en) 1974-05-16
NL7314869A (en) 1974-05-09
DE2355672B2 (en) 1980-01-31
HU169854B (en) 1977-02-28
FR2205701A1 (en) 1974-05-31
FR2205701B1 (en) 1977-08-05
GB1453288A (en) 1976-10-20
DE2355672C3 (en) 1980-10-09
BE806212A (en) 1974-02-15
US3867368A (en) 1975-02-18
IT999733B (en) 1976-03-10

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