Demonstration of magnetoelectric scanning probe microscopy

Hattrick-Simpers, Jason R.; Dai, Liyang; Wuttig, Manfred; Takeuchi, Ichiro; Quandt, Eckhard
October 2007
Review of Scientific Instruments;Oct2007, Vol. 78 Issue 10, p106103
Academic Journal
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±3 μV/Oe in the measured frequency range of 200 Hz–8 kHz. The microscope was used to image a 2 mm diameter ring carrying an ac current as low as 10-5 A. ac fields as small as 3×10-10 T have been detected.


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