pssa201330122open.pdf (543.26 kB)
0/0

The nano-mechanics and magnetic properties of high moment synthetic antiferromagnetic particles

Download (543.26 kB)
journal contribution
posted on 08.01.2015 by Derek Michael Forrester, Feodor Kusmartsev
With nanomagnets increasingly being used and proposed as functional units for in vivo applications, it is vital to understand how to optimize their structure, geometry, and size, and their responses to electromagnetic stimulation. Herein, we predicate how to do so for synthetic antiferromagnetic structures that are subjected to external magnetic control. Because the structures are on the scale of biological entities, interactions with cells and molecular constituents can be extreme and careful design must be undertaken to avoid detrimental effects. Thus, the magnetic responses of multilayers, as demonstrated in experiments by Koh et al. [e.g., Hu et al., Adv. Mater. 20, 1479 (2008) and Koh et al., J. Appl. Phys. 107, 09B522 (2010)], are understood using a fully dynamical investigation based on Landau–Lifshitz–Gilbert equations. We find that during the fabrication of the structures the axial positions of the nanomagnets become offset from each other, leading to the characteristic magnetic hysteresis shapes witnessed. We then find the magnetic nano-mechanical forces generated by such structures.

Funding

M.F. thanks the EPSRC for funding under KTA grant – “Developing prototypes and a commercial strategy for nanoblade technology.”

History

School

  • Science

Department

  • Physics

Published in

Physica Status Solidi A: Applications and Materials Science

Volume

211

Issue

4

Pages

884 - 889 (5)

Citation

FORRESTER, M. and KUSMARTSEV, F.V., 2014. The nano-mechanics and magnetic properties of high moment synthetic antiferromagnetic particles. Physica Status Solidi A: Applications and Materials Science, 211 (4), pp. 884 - 889.

Publisher

© WILEY-VCH Verlag GmbH & Co. KGaA.

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/

Publication date

2014

Notes

This is an Open Access Article. It is published by WILEY-VCH Verlag GmbH & Co. KGaA.

ISSN

1862-6300

Language

en

Licence

Exports

Logo branding

Licence

Exports