Scanning magnetoresistance microscopy with a magnetoresistive sensor cantilever

Nakamura, Motonori; Kimura, Michiya; Sueoka, Kazuhisa; Mukasa, Koichi
April 2002
Applied Physics Letters;4/15/2002, Vol. 80 Issue 15, p2713
Academic Journal
In this work, a cantilever with a magnetoresistive (MR) sensor is fabricated for scanning magnetoresistance microscope, in order to realize the simultaneous imaging of surface topography and stray magnetic field distribution. A constant current flowing through a meander-patterned metal wire produces a defined magnetic field, and the wire is used as a sample to demonstrate the simultaneous imaging and to reveal the field sensitivity of the cantilever. A MR image has been successfully obtained with lateral spatial resolution of a few μm and a field sensitivity (H[sub min]approx. 1.7 Oe) at room temperature. © 2002 American Institute of Physics.


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