JPS57203219A - Thin film magnetic head - Google Patents
Thin film magnetic headInfo
- Publication number
- JPS57203219A JPS57203219A JP8817981A JP8817981A JPS57203219A JP S57203219 A JPS57203219 A JP S57203219A JP 8817981 A JP8817981 A JP 8817981A JP 8817981 A JP8817981 A JP 8817981A JP S57203219 A JPS57203219 A JP S57203219A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic substance
- thin film
- waves
- film magnetic
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
PURPOSE:To increase the electromagnetic conversion characteristics through the provision of specific waves to a magnetic substance orthogonal to the direction of track width, by using a magnetic substance having a negative magnetostrictive constant for at least one of upper and lower thin film magnetic substance members. CONSTITUTION:A lower thin film magnetic substance 21 is provided on a non- magnetic substance insulating base 24, an insulating body 25 enclosing a thin film conductor coil 23 and forming a gap G is provided, waves are provided on an insulator 25, for example, with a special method and an upper thin film magnetic substance 22 corresponding to the waves are formed. As the magnetic substance 22, an Ni-Fe system material having a negative magnetostrictive constant and including 82.5wt% of Ni is used, the magnetization easy axis 221 of induced uniaxial magnetic anisotropy is made coincident with the track width direction 223 and the direction of wave length 222(27) of the waves is made orthogonal to the track width direction 223 of the medium 28. Thus, the electromagnetic converting characteristics can be improved than the case without waves, the readout voltage is 1.3 times and the recording current is decreased by about 30%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8817981A JPS57203219A (en) | 1981-06-10 | 1981-06-10 | Thin film magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8817981A JPS57203219A (en) | 1981-06-10 | 1981-06-10 | Thin film magnetic head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57203219A true JPS57203219A (en) | 1982-12-13 |
JPS6353615B2 JPS6353615B2 (en) | 1988-10-25 |
Family
ID=13935673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8817981A Granted JPS57203219A (en) | 1981-06-10 | 1981-06-10 | Thin film magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57203219A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4663683A (en) * | 1982-11-11 | 1987-05-05 | Matsushita Electric Industrial Co., Ltd. | Magnetoresistive thin film head |
US4750072A (en) * | 1985-02-20 | 1988-06-07 | Hitachi, Ltd. | Thin-film magnetic head provided with a magnetic film having regions of different magnetostriction constants and method of fabricating the same |
JPH0278006A (en) * | 1988-09-13 | 1990-03-19 | Nec Corp | Thin film magnetic head |
EP0455359A2 (en) * | 1990-04-30 | 1991-11-06 | Seagate Technology International | Thin film magnetic head and method of manufacture thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5038325A (en) * | 1973-08-09 | 1975-04-09 | ||
JPS55101124A (en) * | 1979-01-29 | 1980-08-01 | Ibm | Thin layer magnetic haed assembly |
US4241367A (en) * | 1978-03-03 | 1980-12-23 | Matsushita Electric Industrial Co., Ltd. | Thin film magnetic head |
-
1981
- 1981-06-10 JP JP8817981A patent/JPS57203219A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5038325A (en) * | 1973-08-09 | 1975-04-09 | ||
US4241367A (en) * | 1978-03-03 | 1980-12-23 | Matsushita Electric Industrial Co., Ltd. | Thin film magnetic head |
JPS55101124A (en) * | 1979-01-29 | 1980-08-01 | Ibm | Thin layer magnetic haed assembly |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4663683A (en) * | 1982-11-11 | 1987-05-05 | Matsushita Electric Industrial Co., Ltd. | Magnetoresistive thin film head |
US4750072A (en) * | 1985-02-20 | 1988-06-07 | Hitachi, Ltd. | Thin-film magnetic head provided with a magnetic film having regions of different magnetostriction constants and method of fabricating the same |
JPH0278006A (en) * | 1988-09-13 | 1990-03-19 | Nec Corp | Thin film magnetic head |
EP0455359A2 (en) * | 1990-04-30 | 1991-11-06 | Seagate Technology International | Thin film magnetic head and method of manufacture thereof |
US5170303A (en) * | 1990-04-30 | 1992-12-08 | Seagate Technology Inc. | Inductive thin film head having improved readback characteristics |
USRE35228E (en) * | 1990-04-30 | 1996-05-07 | Seagate Technology, Inc. | Inductive thin film head having improved readback characteristics |
Also Published As
Publication number | Publication date |
---|---|
JPS6353615B2 (en) | 1988-10-25 |
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