Hitachi Global Storage Technologies Netherlands B.v.

Tushar Keshubhai Suther

Kurt A Rubin

Charles Mathew Mate

Franck Rose

Steven Gary Schmid

A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recording layer, and at least one of the overcoat layers functions as a stop layer for terminating a chemical-mechanical polishing (CMP) process that substantially planarizes the disk. All of the layers of the multilayered overcoat are located above the lands, but none of the overcoat layers, or a number of layers less than the number of layers over the lands, is located above the recesses.

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Milpitas, CA, United States of America

Tushar Keshubhai Suther