JPS57150120A - Thin film magnetic head and its manufacture - Google Patents
Thin film magnetic head and its manufactureInfo
- Publication number
- JPS57150120A JPS57150120A JP3504281A JP3504281A JPS57150120A JP S57150120 A JPS57150120 A JP S57150120A JP 3504281 A JP3504281 A JP 3504281A JP 3504281 A JP3504281 A JP 3504281A JP S57150120 A JPS57150120 A JP S57150120A
- Authority
- JP
- Japan
- Prior art keywords
- nonmagnetic
- layer
- produced
- film
- noise component
- 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
- G11B5/3109—Details
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
PURPOSE:To reduce a noise component produced by an external edge, in a magnetic material thin film pattern at the end of magnetic poles by making the surface in contacting with a nonmagnetic layer flat and regulating the difference between the maximum and the minimum values of film thickness to more or the same as the thickness of the nonmagnetic layer. CONSTITUTION:A recess 11 is provided by etching for all rear parts of a lower magnetic layer and a part corresponding to a part of the tip on the surface of a nonmagnetic base 1, the 1st permalloy film is formed, the external surface is polished into a smooth surface and permalloy film is imbedded in the recess 11. Then, the 2nd permalloy film is produced on the upper surface, and the 3rd permalloy film of the upper surface is produced to the nonmagnetic gap layer. Thus, the surface of the magnetic material pattern in contact with the nonmagnetic gap layer is made flat and the magnetic material pattern surface at opposite side to the contact surface with the nonmagnetic gap layer is made uneven. Then, the recording and reproduction efficiency is extremely reduced due to the shift in the azimuth angles and the noise component to signal components can be lowered. Thus, the noise component produced by external edges can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3504281A JPS57150120A (en) | 1981-03-11 | 1981-03-11 | Thin film magnetic head and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3504281A JPS57150120A (en) | 1981-03-11 | 1981-03-11 | Thin film magnetic head and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57150120A true JPS57150120A (en) | 1982-09-16 |
Family
ID=12430977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3504281A Pending JPS57150120A (en) | 1981-03-11 | 1981-03-11 | Thin film magnetic head and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57150120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100441170B1 (en) * | 1997-05-22 | 2004-10-12 | 삼성전자주식회사 | Head gap structure capable of increasing track density by eliminating side noise of a track |
-
1981
- 1981-03-11 JP JP3504281A patent/JPS57150120A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100441170B1 (en) * | 1997-05-22 | 2004-10-12 | 삼성전자주식회사 | Head gap structure capable of increasing track density by eliminating side noise of a track |
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