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A near-field room temperature scanning magnetic probe microscope has been developed using a laminated magnetoelectric sensor. The simple trilayer longitudinal-transverse mode sensor, fabricated using Metglas as the magnetostrictive layer and polyvinylidene fluoride as the piezoelectric layer, shows an ac field sensitivity of 467±3μV∕Oe in the measured frequency range of 200Hz–8kHz. The microscope was used to image a 2mm diameter ring carrying an ac current as low as 10−5A. ac fields as small as 3×10−10T have been detected.


©Review of Scientific Instruments 2007, AIP (American Institute of Physics).

Hattrick-Simpers, J. R., Dai, L., Wutting, M., Takeuchi, I., & Quandt, E. (October 2007). Demonstration of Magnetoelectric Scanning Probe Microscopy. Review of Scientific Instruments, 78 (10), #106103.