NDLI: Detection of nonmagnetic metal thin film using magnetic force microscopy

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Detection of nonmagnetic metal thin film using magnetic force microscopy

Content Provider	Semantic Scholar
Author	Wakaya, Fujio Oosawa, Kenta Kajiwara, Masahiro Abo, Satoshi Takai, Mikio
Copyright Year	2018
Abstract	Magnetic force microscopy (MFM) allows detection of stray magnetic fields around magnetic materials and the two-dimensional visualization of these fields. This paper presents a theoretical analysis of the oscillations of an MFM tip above a thin film of nonmagnetic metal. The results show good agreement with experimental data obtained by varying the tip height. The phenomenon analyzed here can be applied as a “metal detector” at the nanometer scale and for contactless measurements of sheet resistivity. The detection sensitivity is obtained as a function of oscillation frequency, thus allowing the determination of the best frequency for the phase-shift measurement. The shift in resonance frequency due to the presence of a nonmagnetic metal is also discussed.Magnetic force microscopy (MFM) allows detection of stray magnetic fields around magnetic materials and the two-dimensional visualization of these fields. This paper presents a theoretical analysis of the oscillations of an MFM tip above a thin film of nonmagnetic metal. The results show good agreement with experimental data obtained by varying the tip height. The phenomenon analyzed here can be applied as a “metal detector” at the nanometer scale and for contactless measurements of sheet resistivity. The detection sensitivity is obtained as a function of oscillation frequency, thus allowing the determination of the best frequency for the phase-shift measurement. The shift in resonance frequency due to the presence of a nonmagnetic metal is also discussed.
Starting Page	261601
Ending Page	261601
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1063/1.5079763
Alternate Webpage(s)	https://arxiv.org/pdf/1812.03270v2.pdf
Alternate Webpage(s)	https://doi.org/10.1063/1.5079763
Volume Number	113
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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