Open AccessSub-nano tesla magnetic imaging based on room-temperature magnetic flux sensors with vibrating sample magnetometry
Author(s) -
Yoshiaki Adachi,
Daisuke Oyama
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4974016
Subject(s) - magnetometer , magnetic field , magnetic resonance force microscopy , materials science , vibration , nuclear magnetic resonance , noise (video) , biomagnetism , magnetic nanoparticles , magnetic force microscope , physics , electromagnetic shielding , magnetization , condensed matter physics , acoustics , nanotechnology , ferromagnetic resonance , composite material , quantum mechanics , artificial intelligence , computer science , nanoparticle , image (mathematics)
We developed a two-dimensional imaging method for weak magnetic charge distribution using a commercially available magnetic impedance sensor whose magnetic field resolution is 10 pT/Hz1/2 at 10 Hz. When we applied the vibrating sample magnetometry, giving a minute mechanical vibration to the sample and detecting magnetic signals modulated by the vibration frequency, the effects of 1/f noise and the environmental low-frequency band noise were suppressed, and a weak magnetic charge distribution was obtained without magnetic shielding. Furthermore, improvement in the spatial resolution was also expected when the signals were demodulated at the second harmonic frequency of the vibration. In this paper, a preliminary magnetic charge imaging using the vibrating sample magnetometry and its results are demonstrated
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom