Recording processes in perpendicular patterned media using longitudinal magnetic recording heads

• Published in: IEEE transactions on magnetics Vol. 37; no. 4; pp. 1657 - 1660
• Main Authors: Barbic, M., Schultz, S., Wong, J., Scherer, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.07.2001; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Anisotropic magnetoresistance; Applied sciences; Columns (process); Density; Electronics; Exact sciences and technology; Fabrication; Image sensors; Magnetic and optical mass memories; Magnetic heads; Magnetic recording; Magnetic recording heads; Magnetic sensors; Magnetism; Media; Other magnetic recording and storage devices (including tapes, disks, and drums); Perpendicular magnetic recording; Physics; Poles; Position (location); Recording; Sensor arrays; Storage and reproduction of information; Synchronization; Transducers; Perpendicular anisotropy; Longitudinal recording; Magnetic head; Giant magnetoresistance; Recording material; Nanostructure; Recording; Experimental study; Columnar structure; Magnetic recording
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/20.950929

An experimental study of the recording processes in patterned magnetic media is presented. The reading of patterned media using spin-valve elements is compared to the signal levels from magneto-resistive sensors. Writing and reading of patterned columnar media at high areal densities is demonstrated. A new experimental technique has been developed that allows precise determination of the location of the write gap poles with respect to the patterned media column during the write process. Implications for patterned media write synchronization and the write head field requirements are discussed.