Title :
Imaging high-frequency magnetic and electric fields using a high-T/sub c/ SQUID microscope
Author :
Chatraphorn, S. ; Fleet, E.F. ; Welistood, F.C. ; Black, R.C.
Author_Institution :
Dept. of Phys., Maryland Univ., College Park, MD, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
We have used a liquid-nitrogen-cooled scanning SQUID microscope to image room-temperature sources of high-frequency magnetic fields and electric fields. We detect the fields by monitoring their effect on the SQUID modulation depth; high-frequency magnetic fields affect the modulation depth differently than high-frequency electric fields. We briefly describe our system, explain the principle behind detection of magnetic and electric fields, and show images of some simple room-temperature samples in the 0.8-13 GHz frequency range.
Keywords :
SQUIDs; electric field measurement; high-temperature superconductors; magnetic field measurement; microscopes; 0.8 to 13 GHz; high T/sub c/ superconductor; high frequency electric field imaging; high frequency magnetic field imaging; modulation depth; scanning SQUID microscope; Frequency; Magnetic fields; Magnetic flux; Magnetic force microscopy; Magnetic modulators; Magnetic sensors; Radiofrequency amplifiers; SQUIDs; Superconducting magnets; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
