Optimizing magnetic heating of isolated magnetic nanowires (MNWs) by simulation

Yicong Chen; Allison Harpel; Bethanie J. Hills Stadler

doi:10.1063/9.0000335

AIP Advances (Mar 2022)

Optimizing magnetic heating of isolated magnetic nanowires (MNWs) by simulation

Yicong Chen,
Allison Harpel,
Bethanie J. Hills Stadler

Affiliations

Yicong Chen: Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities 200 Union Street SE, Minneapolis, Minnesota 55455, USA
Allison Harpel: Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities 200 Union Street SE, Minneapolis, Minnesota 55455, USA
Bethanie J. Hills Stadler: Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities 200 Union Street SE, Minneapolis, Minnesota 55455, USA

DOI: https://doi.org/10.1063/9.0000335
Journal volume & issue: Vol. 12, no. 3
pp. 035007 – 035007-5

Abstract

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Magnetic properties such as coercivity, remanence and saturation magnetization will determine the area enclosed by the hysteresis loop of a magnetic material, which also represents magnetic heating. Nanowarming of cryopreserved organs is a new application for magnetic heating using nanoparticles. In this paper, isolated Ni MNW of different sizes and shapes are studied via micromagnetic simulation to explore the optimization of heating using individual MNW. Ellipsoidal MNWs with small (30nm) diameters turn out to be most promising in heating ability due to their large hysteresis area and their potential to distribute uniformly in an organ that is being heated. In addition to optimized heating, a special switching pattern of magnetic moment was also observed for cylindrical large (200nm) MNW. This special switching pattern can trigger applications such as quantum computing.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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