JPS57117118A - Thin film magnetic head - Google Patents
Thin film magnetic headInfo
- Publication number
- JPS57117118A JPS57117118A JP295481A JP295481A JPS57117118A JP S57117118 A JPS57117118 A JP S57117118A JP 295481 A JP295481 A JP 295481A JP 295481 A JP295481 A JP 295481A JP S57117118 A JPS57117118 A JP S57117118A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thickness
- thin film
- magnetic head
- permalloy
- 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
- G11B5/31—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
-
- 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
- G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
- G11B5/3106—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
PURPOSE:To avoid corrosion during the use for a long period, by providing a surface modified into high corrosion resistance on an end opposing to a recording medium for a magnetic core layer of a thin magnetic head. CONSTITUTION:On a substrate 1, a magnetic core layer 2 formed with a metallic ferromagnetic substance such as permalloy, a conductor coil layer 3, an insulation layer 4 and a protection layer 5 are constituted with known technologies. After polishing ends 6 opposing to a recording medium, a metallic thin film such as Ti, Cr or Rh is adhered by a sputtering method, heat treatment is made at 200-500 deg.C, the metal is diffused to a permalloy layer to form a surface layer 7 having the diffusion thickness of several tens-several thousands Angstrom . Or, after polishing of the said ends 6, heat treatment is made at 200-300 deg.C for several hours in air to form a corrosion-resistant oxide layer 7 of about 100Angstrom thickness. Thus, the corrosion resistance can be increased without giving adverse effect on other characteristics through the thickness of the layer 7 in the said range to achieve long life.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP295481A JPS57117118A (en) | 1981-01-12 | 1981-01-12 | Thin film magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP295481A JPS57117118A (en) | 1981-01-12 | 1981-01-12 | Thin film magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57117118A true JPS57117118A (en) | 1982-07-21 |
Family
ID=11543754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP295481A Pending JPS57117118A (en) | 1981-01-12 | 1981-01-12 | Thin film magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57117118A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61170917A (en) * | 1985-01-24 | 1986-08-01 | Fujitsu Ltd | Thin film magnetic head |
FR2611970A1 (en) * | 1987-03-06 | 1988-09-09 | Thomson Csf | METHOD FOR MAKING A THIN-FILM MAGNETIC HEAD AND APPLICATION TO A RECOVERY / READING HEAD |
JP2008194781A (en) * | 2007-02-14 | 2008-08-28 | Sintokogio Ltd | Centrifugal type abrasive grain projection device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5191712A (en) * | 1974-12-31 | 1976-08-11 | ||
JPS53123114A (en) * | 1977-03-31 | 1978-10-27 | Ibm | Magnetic head assembly |
-
1981
- 1981-01-12 JP JP295481A patent/JPS57117118A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5191712A (en) * | 1974-12-31 | 1976-08-11 | ||
JPS53123114A (en) * | 1977-03-31 | 1978-10-27 | Ibm | Magnetic head assembly |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61170917A (en) * | 1985-01-24 | 1986-08-01 | Fujitsu Ltd | Thin film magnetic head |
FR2611970A1 (en) * | 1987-03-06 | 1988-09-09 | Thomson Csf | METHOD FOR MAKING A THIN-FILM MAGNETIC HEAD AND APPLICATION TO A RECOVERY / READING HEAD |
JP2008194781A (en) * | 2007-02-14 | 2008-08-28 | Sintokogio Ltd | Centrifugal type abrasive grain projection device |
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