Abstract
Extensive work on radical ESR (electron spin resonance) materials has led to the discovery of a number of products exhibiting intense and narrow ESR lines, suitable for magnetometry. These materials can be classified using a convenient figure of merit. Two of them were used in two specific architectures for a scalar magnetometer-(FA/sub )/2P((fluoranthenyl)/sub 2/PF/sub 6/)-/sub 6/ with a resolution of 1 nT-Hz/sup -1/2/ (white noise) and a vectorial magnetometer (AcTCNQ/sub 2/) with a resolution of 0.2 nT-Hz/sup -1/2/ (white noise). These magnetometers can be used in high gradients (usual indoor environments) and have bandwidths which can be extended from DC to several kHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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