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Title: Read/write head having a GMR sensor biased by permanent magnets located between the GMR and the pole shields

A compact read/write head having a biased giant magnetoresistive sensor. Permanent magnet films are placed adjacent to the giant magnetoresistive sensor operating in the current-perpendicular-to the-plane (Cpp) mode and spaced with respect to the sensor by conducting films. These permanent magnet films provide a magnetic bias. The bias field is substantial and fairly uniform across sensor height. Biasing of the giant magnetoresistive sensor provides distinguishable response to the rising and falling edges of a recorded pulse on an adjacent recording medium, improves the linearity of the response, and helps to reduce noise. This read/write head is much simpler to fabricate and pattern and provides an enhanced uniformity of the bias field throughout the sensor.
 [1] ;  [2] ;  [3]
  1. (San Carlos, CA)
  2. (Fremont, CA)
  3. (San Jose, CA)
Publication Date:
OSTI Identifier:
Report Number(s):
US 5883763
DOE Contract Number:
Resource Type:
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
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