Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2005-01-11
2005-01-11
Watko, Julie Anne (Department: 2652)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
06842306
ABSTRACT:
A magnetic head has highly thermally conductive insulator materials containing cobalt-oxide so that heat can more effectively dissipate from the magnetic head. In one illustrative example, the magnetic head has first and second gap layers and a read sensor disposed between the first and the second gap layers. The first and the second gap layers are advantageously made of cobalt-oxide (CoOx) (e.g. CoO or Co2O3), which may exhibit a thermal conductivity of between 5-8 watts/meter-Kelvin or greater. In another illustrative example, a magnetic head is made of a substrate; first and second shield layers; an undercoat layer formed between the substrate and the first shield layer; first and second gap layers formed between the first and the second shield layers; and a read sensor formed between the first and the second gap layers. The undercoat layer is also made of CoOx. The improved dissipation of heat from the magnetic head improves the read sensor performance and reduces the likelihood of other problems, such as head-to-disk interface problems.
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Cyrille Marie-Claire
Hsiao Wen-Chien (David)
Ju Yongho Sungtaek
Lee Wen-Yaung
Maat Stefan
Hitachi Global Storage Technologies
Oskorep, Esq. John J.
Watko Julie Anne
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