Magnetic shield for magnetic recording head

摘要

A magnetic shield for a magnetic recording head includes a plurality of ferromagnetic layers, a spacer layer, and a buffer layer, wherein the buffer layer includes Co, Fe, B, or a combination thereof and effectively reduces irregular grain growth within the ferromagnetic layers, the spacer layer includes Ru, and the ferromagnetic layers magnetically couple through each of the buffer layer and the spacer layer.

主权项

1. A magnetic shield for a magnetic recording head, the magnetic shield comprising:
a plurality of ferromagnetic layers; a buffer layer comprising Co and B; and a spacer layer located between two of the ferromagnetic layers; wherein the buffer layer comprises between 35 atomic percent and 45 atomic percent Co, between 35 atomic percent and 45 atomic percent Fe, and between 15 atomic percent and 25 atomic percent B; and the spacer layer is not more than 10 Angstroms thick.