Demonstration of magnetoelectric scanning probe microscopy.
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 microV/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 x 10(-10) T have been detected.
Hattrick-Simpers
Jason R
JR
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA.
Dai
Liyang
L
Wuttig
Manfred
M
Takeuchi
Ichiro
I
Quandt
Eckhard
E
D055590:Electromagnetic Phenomena / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D020527:Microscopy, Scanning Probe / Q000295:instrumentation* / Q000379:methods; D010865:Pilot Projects; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity