Aberration corrected STEM of iron rhodium nanoislands

McLaren, M.J., Hage, F.S., Loving, M., Ramasse, Q.M., Lewis, L.H., Marrows, C.H. and Brydson, R.M.D. (2014) Aberration corrected STEM of iron rhodium nanoislands. Journal of Physics: Conference Series, 522, 012039. (doi: 10.1088/1742-6596/522/1/012039)

Abstract

Iron-rhodium (FeRh) nanoislands of equiatomic composition have been analysed using scanning transmission electron microscopy (STEM) electron energy loss spec-troscopy(EELS) and high angle annular dark field (HAADF) techniques. Previous magne-tometry results have lead to a hypothesis that at room temperature the core of the islands are antiferromagnetic while the shell has a small ferromagnetic signal. The causes of this effect are most likely to be a difference in composition at the edges or a strain on the island that stretches the lattice and forces the ferromagnetic transition. The results find, at the film-substrate interface, an iron-rich layer ~ 5 Å thick that could play a key role in affecting the magnetostructural transition around the interfacial region and account for the room temperature ferromagnetism.

• Item Type: Articles
• Additional Information: This grant has been supported by EPSRC grants EP/G065640/1, EP/F056311/1 and the National Science Foundation grant DMR-0908767.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Hage, Dr Fredrik Sydow
• Authors: McLaren, M.J., Hage, F.S., Loving, M., Ramasse, Q.M., Lewis, L.H., Marrows, C.H., and Brydson, R.M.D.
• 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: 11 June 2014
• Copyright Holders: Copyright © 2016 The Authors
• First Published: First published in Journal of Physics: Conference Series 522: 012039
• Publisher Policy: Reproduced under a Creative Commons License