Title :
Imaging and detection of periodic, 5-100 Hz magnetic fields with epitaxial rare earth-iron garnet films
Author :
Hafez, J.M. ; Gao, J. ; Eden, J.G.
Author_Institution :
Univ. of Illinois, Urbana
Abstract :
Sinusoidal magnetic fields with strengths as small as ~0.5 nT (RMS) and frequencies of 5 -100 Hz have been detected at room temperature by modulating the magneto-optical Kerr response of epitaxial rare earth-iron garnet films. Ferromagnetic nanoparticles with a mean size of 500 nm have also been detected in real time in a liquid flow stream at field strengths as low as 1 muT.
Keywords :
Kerr magneto-optical effect; ferromagnetic materials; garnets; magnetic fields; nanoparticles; rare earth compounds; epitaxial rare earth-iron garnet films; ferromagnetic nanoparticles; field strengths; frequency 5 Hz to 100 Hz; liquid flow stream; magneto-optical Kerr response; sinusoidal magnetic fields;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20081813
