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

T. P. Almeida*, A. R. Muxworthy, A. Kovács, W. Williams, R. E. Dunin-Borkowski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number012027
JournalJournal of Physics: Conference Series
Volume644
Issue number1
DOIs
Publication statusPublished - 12 Oct 2015

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