JPS5564621A - Thin-film magnetic head - Google Patents
Thin-film magnetic headInfo
- 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
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.
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)
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 |
-
1978
- 1978-11-07 JP JP13624978A patent/JPS5564621A/en active Pending
Cited By (2)
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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