Publication detail

Stable room-temperature ferromagnetic phase at the FeRh(100) surface

PRESSACCO, F. UHLÍŘ, V. GATTI, M. BENDOUNAN, A. FULLERTON, E. SIROTTI, F.

Original Title

Stable room-temperature ferromagnetic phase at the FeRh(100) surface

Type

journal article in Web of Science

Language

English

Original Abstract

Interfaces and low dimensionality are sources of strong modifications of electronic, structural, and magnetic properties of materials. FeRh alloys are an excellent example because of the first-order phase transition taking place at ~400 K from an antiferromagnetic phase at room temperature to a high temperature ferromagnetic one. It is accompanied by a resistance change and volume expansion of about 1%. We have investigated the electronic and magnetic properties of FeRh(100) epitaxially grown on MgO by combining spectroscopies characterized by different probing depths, namely X-ray magnetic circular dichroism and photoelectron spectroscopy. We find that the symmetry breaking induced at the Rh-terminated surface stabilizes a surface ferromagnetic layer involving five planes of Fe and Rh atoms in the nominally antiferromagnetic phase at room temperature. First-principles calculations provide a microscopic description of the structural relaxation and the electron spin-density distribution that support the experimental findings.

Keywords

Circular-dichroism; Oxide interfaces; FeRh alloy; Magnetization; Photoemission

Authors

PRESSACCO, F.; UHLÍŘ, V.; GATTI, M.; BENDOUNAN, A.; FULLERTON, E.; SIROTTI, F.

Released

3. 3. 2016

Publisher

Springer Nature

ISBN

2045-2322

Periodical

Scientific Reports

Year of study

6

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

9

URL

https://www.nature.com/articles/srep22383

Full text in the Digital Library

http://hdl.handle.net/11012/179547

BibTex

@article{BUT133850,
  author="Frederico {Pressacco} and Vojtěch {Uhlíř} and Matteo {Gatti} and A. {Bendounan} and E.E. {Fullerton} and F. {Sirotti}",
  title="Stable room-temperature ferromagnetic phase at the FeRh(100) surface",
  journal="Scientific Reports",
  year="2016",
  volume="6",
  number="1",
  pages="1--9",
  doi="10.1038/srep22383",
  issn="2045-2322",
  url="https://www.nature.com/articles/srep22383"
}