JPS5564621A - Thin-film magnetic head - Google Patents

Thin-film magnetic head

Info

Publication number
JPS5564621A
JPS5564621A JP13624978A JP13624978A JPS5564621A JP S5564621 A JPS5564621 A JP S5564621A JP 13624978 A JP13624978 A JP 13624978A JP 13624978 A JP13624978 A JP 13624978A JP S5564621 A JPS5564621 A JP S5564621A
Authority
JP
Japan
Prior art keywords
regions
iii
magnetic
head
track width
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.)
Pending
Application number
JP13624978A
Other languages
Japanese (ja)
Inventor
Masahiro Miyazaki
Yoshimasa Miura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13624978A priority Critical patent/JPS5564621A/en
Publication of JPS5564621A publication Critical patent/JPS5564621A/en
Pending 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
    • G11B5/187—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
    • G11B5/2455—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 the magnetic circuit including at least one magnetic thin film of controllable properties
    • G11B5/2457—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 the magnetic circuit including at least one magnetic thin film of controllable properties disposed immediately adjacent to the gap
    • 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)

Abstract

PURPOSE:To reduce a head-positioning error when forming a core of a magnetic material film, by providing the core with an easy magnetizarion axis perpendicular to a magnetif medium surface at both terminals in a track width direction and a hard magnetization axis at its center. CONSTITUTION:Magnetic layer 1 is divided into three regions I-III; and in a method of giving magnetic anisotropy such as vapor deposition, regions I and III at both sides are formed in a direction (arrow P) perpendicular to track width W1, and region II is given an easy magnetization axis of width W2 in a track width W1 direction (arrow Q). This layer is formed with magnetic field application directions alternated by mask vapor deposition. In write operation, magnetic layers operate effectively in all regions I-III and reproduction is done in region II whose permeability is secured. In this way, the head positioning error of a high-density and narrow-track head is reduced to improve S/N, thereby reducing crosstalk.
JP13624978A 1978-11-07 1978-11-07 Thin-film magnetic head Pending JPS5564621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13624978A JPS5564621A (en) 1978-11-07 1978-11-07 Thin-film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13624978A JPS5564621A (en) 1978-11-07 1978-11-07 Thin-film magnetic head

Publications (1)

Publication Number Publication Date
JPS5564621A true JPS5564621A (en) 1980-05-15

Family

ID=15170763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13624978A Pending JPS5564621A (en) 1978-11-07 1978-11-07 Thin-film magnetic head

Country Status (1)

Country Link
JP (1) JPS5564621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281931A2 (en) * 1987-03-05 1988-09-14 Matsushita Electric Industrial Co., Ltd. Magnetic head
JPH04366403A (en) * 1991-06-14 1992-12-18 Nec Corp Vertical magnetic head and its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281931A2 (en) * 1987-03-05 1988-09-14 Matsushita Electric Industrial Co., Ltd. Magnetic head
JPH04366403A (en) * 1991-06-14 1992-12-18 Nec Corp Vertical magnetic head and its manufacture

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