Soucaille, R, Sharifabad, ME, Telling, ND ORCID: https://orcid.org/0000-0002-2683-5546 and Hicken, RJ (2020) Broadband optical measurement of AC magnetic susceptibility of magnetite nanoparticles. Applied Physics Letters, 116 (6). 062404 - 062404.

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Abstract

Characterization of magnetic nanoparticles in solution is challenging due to the interplay between magnetic relaxation and agglomeration. The AC magnetic susceptibility of magnetite nanoparticles in water has been studied using magneto-optical methods in the frequency range of 10 Hz–250 kHz. The Faraday effect is detected simultaneously with changes in the fluid configuration. It is shown that the relative sensitivity to the magnetic and structural response can be adjusted by varying the wavelength, paving the way toward spatially resolved studies at the micro-scale.
The authors gratefully acknowledge the financial support of the UK Engineering and Physical Sciences Research Council (EPSRC) through Research Grant No. EP/P011403/1.

Item Type: Article
Additional Information: The final accepted manuscript and all relevant information can be found at; https://aip.scitation.org/doi/10.1063/1.5140362
Uncontrolled Keywords: AC magnetic susceptibility, magnetite nanoparticles.
Subjects: Q Science > Q Science (General)
Q Science > QA Mathematics
Q Science > QC Physics
Divisions: Faculty of Medicine and Health Sciences > School of Pharmacy and Bioengineering
Depositing User: Symplectic
Date Deposited: 09 Mar 2020 11:57
Last Modified: 10 Feb 2021 01:30
URI: https://eprints.keele.ac.uk/id/eprint/7771

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