
TY  - JOUR
A1  - Schmidt, Phillip 
A1  - McEnroe, Suzanne 
A1  - Robinson, Peter 
A1  - Fabian, Karl 
A1  - Gattacceca, Jérôme 
A1  - Hankard, Fatim 
A1  - Heidelbach, Florian 
T1  - Magnetic moments of fine particles from micromagnetic surveys
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2010
VL  - 2010
IS  - 1
SP  - 1
EP  - 1
KW  - 
UR  - https://doi.org/10.1071/ASEG2010AB127 
N2  - A new scanning magnetic microscope to image magnetic fields with micrometric resolution has been constructed based on a giant magnetoresistance (GMR) sensor. Operating in zerofield, the GMR sensor is sensitive to the components of the magnetic field arising from the remanent magnetisation parallel to the plane of the cut rock surface. The field component perpendicular to the surface therefore has to be calculated using FFT relationships. The spatial resolution of the system is 20 µm, and its peak-to-peak noise during operation is 250 nT. Its high spatial resolution and a minimum sensor- to-sample distance of only 30 µm compensate for its rather modest field sensitivity. 
ER  -

