Scanning nonlinear magnetic microscopy.
Scanning nonlinear magnetic microscopy (SNMM) is introduced as a new microscopic technique for measurement of the distribution of magnetization. The technique is based on the detection of inductance variation in a magnetic material under application of an external alternating magnetic field. The measured inductance thus reflects the nonlinear magnetic response of the material, giving the nonlinear magnetic permeability (mu(333)) and the direction and magnitude of magnetization. SNMM is demonstrated in application to measurement of the magnetization distribution of a floppy disk.
Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan.
Makoto
M
Endo
Koya
K
Ohara
Yasuo
Y
Cho
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008280:Magnetics / Q000295:instrumentation*; D008422:Materials Testing / Q000295:instrumentation* / Q000379:methods; D008853:Microscopy / Q000295:instrumentation*; D017711:Nonlinear Dynamics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity