Almeida, T. P. , Muxworthy, A. R., Kovács, A., Williams, W. and Dunin-Borkowski, R. E. (2017) Observation of thermally-induced magnetic relaxation in a magnetite grain using off-axis electron holography. Journal of Physics: Conference Series, 902, 012001. (doi: 10.1088/1742-6596/902/1/012001)
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Abstract
A synthetic basalt comprising magnetic Fe3O4 grains (~ 50 nm to ~ 500 nm in diameter) is investigated using a range of complementary nano-characterisation techniques. Off-axis electron holography combined with in situ heating allowed for the visualisation of the thermally-induced magnetic relaxation of an Fe3O4 grain (~ 300 nm) from an irregular domain state into a vortex state at 550˚C, just below its Curie temperature, with the magnetic intensity of the vortex increasing on cooling.
Item Type: | Articles |
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Additional Information: | The authors would like to thank NERC (grant NE/J020966/1) and ERC (grant 320832) for funding. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Almeida, Dr Trevor |
Authors: | Almeida, T. P., Muxworthy, A. R., Kovács, A., Williams, W., and Dunin-Borkowski, R. E. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Journal of Physics: Conference Series |
Publisher: | IOP Publishing |
ISSN: | 1742-6588 |
ISSN (Online): | 1742-6596 |
Published Online: | 16 October 2017 |
Copyright Holders: | Copyright © 2017 IOP Publishing Ltd |
First Published: | First published in Journal of Physics: Conference Series 902: 012001 |
Publisher Policy: | Reproduced under a Creative Commons License |
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