Magnetorelaxometry of Nanoparticles Using a GMI Magnetometer | Zendy

Basile Dufay | Zendy; S. Saez | Zendy; Christophe Dolabdjian | Zendy; Frank Ludwig | Zendy; E. Heim | Zendy; M. Schilling | Zendy; Letícia de Melo | Zendy; David Ménard | Zendy

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Magnetorelaxometry of Nanoparticles Using a GMI Magnetometer

Author(s) -

Basile Dufay,

S. Saez,

Christophe Dolabdjian,

Frank Ludwig,

E. Heim,

M. Schilling,

Letícia de Melo,

David Ménard

Publication year - 2009

Publication title -

sensor letters

Language(s) - English

Resource type - Journals

eISSN - 1546-198X

pISSN - 1546-1971

DOI - 10.1166/sl.2009.1087

Subject(s) - magnetometer , materials science , nanoparticle , nuclear magnetic resonance , nanotechnology , physics , magnetic field , quantum mechanics

International audienceWe have performed magnetorelaxometry measurements on superparamagnetic magnetite (Fe3O4) nanoparticles using a low-cost custom-made Giant MagnetoImpendance magnetometer. We demonstrate that we are able to evaluate the concentration of nanoparticles in the sample (with a volume of around 150 µl) by comparison with reference measurements of the induced magnetic field using fits to the Néel expression for magnetorelaxation

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