Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2017

Vydáno

03.03.2016

Nakladatel

Springer Nature

ISSN

2045-2322

Periodikum

Scientific Reports

Svazek

6

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

9

Strany počet

9

URL

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

Plný text v Digitální knihovně

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"
}

Dokumenty

srep22383