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MAGNETIC FIELD OBSERVATION DEVICE AND MAGNETIC FIELD OBSERVATION METHOD meetings

Foreign code F120006988
File No. S2010-1159-C0
Posted date Oct 29, 2012
Country WIPO
International application number 2011JP070146
International publication number WO 2012/029973
Date of international filing Sep 5, 2011
Date of international publication Mar 8, 2012
Priority data
  • P2010-198054 (Sep 3, 2010) JP
Title MAGNETIC FIELD OBSERVATION DEVICE AND MAGNETIC FIELD OBSERVATION METHOD meetings
Abstract

Disclosed are a magnetic field observation device and magnetic field observation method capable of measuring the magnetic force with high resolution near the surface of a magnetic sample, and capable of polarity detection of the magnetic poles on the surface of said magnetic sample. The disclosed magnetic field observation device is provided with a probe, an excitation mechanism for exciting the probe, a scanning mechanism for producing relative displacement of the probe and the magnetic sample, an alternating magnetic field generation mechanism which can periodically reverse magnetization of the probe and which applies to the probe an alternating magnetic field of a magnitude that does not reverse magnetization of the magnetic sample, and a modulation measurement mechanism capable of detecting, by measuring the intensity of one of the spectral sidebands generated by frequency demodulation or frequency modulation, the degree of periodic frequency modulation of probe oscillation caused by the apparent spring constant of the probe which changes periodically depending on the force which, changing periodically in intensity, is applied to the probe by the alternating force from the magnetic interaction between the magnetization of the probe and the magnetization of the magnetic sample

the disclosed magnetic field observation method is performed using said magnetic field observation device.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • AKITA UNIVERSITY,
  • SAITO, HITOSHI,
  • YOSHIMURA, SATORU
  • Inventor
  • SAITO, HITOSHI,
  • YOSHIMURA, SATORU
IPC(International Patent Classification)
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