Claims
- 1. A thin film magnetic head comprising at least a magnetic layer, a coil conductor layer, and an insulative layer formed on a substrate, and a protective layer stacked on said magnetic layer, characterized in that said protective layer comprises MgO, SiO.sub.2, and Al.sub.2 O.sub.3 ; and further wherein said protective layer comprises 15 to 70 mole % of MgO, 25 to 80 mole % of SiO.sub.2, and 5 to 60 mole % Al.sub.2 O.sub.3.
Priority Claims (2)
Number |
Date |
Country |
Kind |
63-25722 |
Feb 1988 |
JPX |
|
63-274402 |
Nov 1988 |
JPX |
|
Parent Case Info
This is a divisional of application Ser. No. 07/305,678 filed Feb. 2, 1989, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4681813 |
Yamada et al. |
Jul 1987 |
|
4948667 |
Mikami et al. |
Aug 1990 |
|
4975398 |
Brar et al. |
Dec 1990 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
0156916 |
Dec 1981 |
JPX |
0052422 |
Mar 1984 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
305678 |
Feb 1989 |
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