Patterned-electron-beam magnetic tomography technique for observing a magnetic field distribution generated by a magnetized material

Summary form only given. We have previously reported a technique for mapping a magnetic field distribution over the air-bearing surface of a recording head, see Suzuki et al. (2000, 1998). This technique uses modified transmission electron microscopy and computer processing to produce a three-dimensional intensity profile of a magnetic head field. We demonstrate an improved magnetic sensitivity of this technique and us it to analyze a magnetic vector distribution generated by a sub-micrometer-square area of a magnetized material.