We show that a single atomic magnetometer in a magnetically unshielded environment can be used to perform magnetic particle spectroscopy (MPS) and AC susceptometry (ACS) on liquid-suspended magnetic nanoparticles. We demonstrate methods allowing a simultaneous recording of M(H) and dM/dH(H) dependences of samples containing down to 1 μg of iron. Our results pave the way towards an atomic magnetometer based MPI scanner.
@article{arxiv.1612.07094,
title = {MPS and ACS with an atomic magnetometer},
author = {Simone Colombo and Victor Lebedev and Zoran D. Grujic and Vladimir Dolgovskiy and Antoine Weis},
journal= {arXiv preprint arXiv:1612.07094},
year = {2016}
}
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ISSN 2365-9033. Available at: <https://journal.iwmpi.org/index.php/iwmpi/article/view/27>