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IOP Publishing, Journal of Physics: Conference Series, (644), p. 012027, 2015

DOI: 10.1088/1742-6596/644/1/012027

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Visualisation of high temperature magnetisation states in magnetite grains using off-axis electron holography

Journal article published in 2015 by T. P. Almeida, A. R. Muxworthy, A. Kovács ORCID, W. Williams, R. E. Dunin Borkowski
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The production of a synthetic basalt comprising Fe3O4 grains (∼ 50 nm to ∼ 500 nm), via a glass ceramic method, has been confirmed using transmission electron microscopy and X-ray diffractometry. Off-axis electron holography combined with in situ heating allowed for the visualisation of non-uniform vortex states present in saturation remanent structures, and their variation approaching the Curie temperature; determined separately by bulk thermomagnetic measurements.