Title :
High sensitivity permeability measurements of striped films obtained by input impedance
Author :
Yabukami, S. ; Uo, T. ; Yamaguchi, M. ; Arai, K.I. ; Takezawa, M.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
We propose a new method to measure the permeability of striped films. The permeability can be obtained by the change in the input impedance of the film. The sensitivity of these measurements are compared with the figure-eight coil method. The sensitivity of the method is estimated over 100 times greater than a conventional figure-eight coil method. The permeability of striped CoNbZr films (100 μm wide) can be measured accurately using this permeameter
Keywords :
magnetic permeability measurement; magnetic thin films; CoNbZr; figure-eight coil method; input impedance; magnetic permeability measurement; permeameter; sensitivity; striped film; Coils; Conductive films; Electrical resistance measurement; Frequency; Impedance measurement; Magnetic films; Magnetic flux; Optical films; Permeability measurement; Reflection;
Journal_Title :
Magnetics, IEEE Transactions on
