Aberration corrected STEM of iron rhodium nanoislands

M. J. McLaren; F. S. Hage; M. Loving; Q. M. Ramasse; L. H. Lewis; C. H. Marrows; R. M D Brydson

doi:10.1088/1742-6596/522/1/012039

Aberration corrected STEM of iron rhodium nanoislands

M. J. McLaren, F. S. Hage, M. Loving, Q. M. Ramasse, L. H. Lewis, C. H. Marrows, R. M D Brydson

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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.

Original language	English
Article number	012039
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	522
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/522/1/012039
Publication status	Published - 11 Jun 2014
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1742-6596/522/1/012039

Aberration corrected STEM of iron rhodium nanoislands
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title = "Aberration corrected STEM of iron rhodium nanoislands",

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 {\AA} thick that could play a key role in affecting the magnetostructural transition around the interfacial region and account for the room temperature ferromagnetism. ",

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doi = "10.1088/1742-6596/522/1/012039",

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TY - JOUR

T1 - Aberration corrected STEM of iron rhodium nanoislands

AU - McLaren, M. J.

AU - Hage, F. S.

AU - Loving, M.

AU - Ramasse, Q. M.

AU - Lewis, L. H.

AU - Marrows, C. H.

AU - Brydson, R. M D

PY - 2014/6/11

Y1 - 2014/6/11

N2 - 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.

AB - 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.

U2 - 10.1088/1742-6596/522/1/012039

DO - 10.1088/1742-6596/522/1/012039

M3 - Article

AN - SCOPUS:84902973309

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VL - 522

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

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ER -

Aberration corrected STEM of iron rhodium nanoislands

Abstract

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