MAGNETIC FIELD OBSERVATION DEVICE AND MAGNETIC FIELD OBSERVATION METHOD
|Posted date||Oct 29, 2012|
|International application number||2011JP070146|
|International publication number||WO 2012/029973|
|Date of international filing||Sep 5, 2011|
|Date of international publication||Mar 8, 2012|
|Title||MAGNETIC FIELD OBSERVATION DEVICE AND MAGNETIC FIELD OBSERVATION METHOD|
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.
|IPC(International Patent Classification)|
Contact Information for " MAGNETIC FIELD OBSERVATION DEVICE AND MAGNETIC FIELD OBSERVATION METHOD "
- National University Corporation Akita university Cooperative Research Center Division of Intellectual Property
- URL: http://www.akita-u.ac.jp/honbu/social/
- Address: 1-1, Tegata-Gakuen-Machi, Akita-shi, Akita, Japan , 010-8502
- Fax: 81-18-837-5356