Double-gap magnetoresistive head having an elongated central wri

Details Double-gap magnetoresistive head having an elongated central wri Double-gap magnetoresistive head having an elongated central wri

1987-02-17

1989-02-07

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360121, G11B 5127, G11B 533

Patent

active

048035807

ABSTRACT:
A magnetoresistive head having separate write and read gaps including a leading write pole, a trailing write/shield pole, and a following shield pole, wherein an elongated magnetoresistive sensor strip having a central sense region is mounted in the read gap, and further wherein the leading write pole has a length corresponding to the central sense region of the sensor and defines a track width, and the trailing/shield pole and following shield are the same length as the overall length of the magnetoresistive sensor strip.

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Meiklejohn et al., "New Magnetic Anisotrophy", Physical Review, Jun. 1, 1956, vol. 102, No. 5, pp. 1413-1414.
Glazer et al., "Stabilization of the Ferromagnetic Domain Structure in Thin Films with Exchange Anisotrophy", Institute of Metal Physics, Dec. 6, 1987, vol. 26, No. 2, pp. 103-110.
Tsang et al., "Temperature Dependance of Unidirectional Anisotrophy Effects in the Permalloy FeMn Systems", Journal of Applied Physics, Mar. 1982, vol. 53, No. 3, pp. 2605-2607.
Tsang et al., "Study of Domain Formation in Small Permalloy Magnetoresistive Elements", Journal of Applied Physics, Mar. 1982, vol. 53, No. 3, pp. 2602-2604.
Tsang, "Magnetics of Small MR Sensors", IBM Magnetic Recording Institute.
Neter et al., "Magnetic Head", IBM TDB, Nov. 75, vol. 18, No. 6, pp. 1744-1745.

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