Patterson & Sheridan, LLP
Two-dimensional magnetic recording (TDMR) read head structure with different stacked sensors and disk drive incorporating the structure
A hybrid read head structure for two-dimensional magnetic recording (TDMR) in a disk drive has two stacked current-perpendicular-to-the plane magnetoresistive (CPP-MR) read heads or sensors substantially aligned with one another in the along-the track direction to enable both sensors to read data from the same data track. The structure is a hybrid structure formed on the disk drive slider with the lower sensor being a dual free layer (DFL) or scissoring type of CPP-MR sensor and the upper sensor being a single free layer (SFL) type of CPP-MR sensor.
WESTERN DIGITAL TECHNOLOGIES, INC.
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Xiaoyong Daniele Guanxiong Chih-Ching Ying Ming Yukimasa
Liu Mauri Li Hu Hong Mao Okada