Detail publikace

Phase Coexistence and Kinetic Arrest in the Magnetostructural Transition of the Ordered Alloy FeRh

Keavney, D. Choi, Y. Holt, M. Uhlíř, V. Arena, D. Fullerton, E. Ryan, P. Kim, J.

Originální název

Phase Coexistence and Kinetic Arrest in the Magnetostructural Transition of the Ordered Alloy FeRh

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In materials where two or more ordering degrees of freedom are closely matched in their free energies, coupling between them, or multiferroic behavior can occur. These phenomena can produce a very rich phase behavior, as well as emergent phases that offer useful properties and opportunities to reveal novel phenomena in phase transitions. The ordered alloy FeRh undergoes an antiferromagnetic to ferromagnetic phase transition at ~375 K, which illustrates the interplay between structural and magnetic order mediated by a delicate energy balance between two configurations. We have examined this transition using a combination of high-resolution x-ray structural and magnetic imaging and comprehensive x-ray magnetic circular dichroism spectroscopy. We find that the transition proceeds via a defect-driven domain nucleation and growth mechanism, with significant return point memory in both the structural and magnetic domain configurations. The domains show evidence of inhibited growth after nucleation, resulting in a quasi-2nd order temperature behavior.

Klíčová slova

FeRh; critical behavior; x-ray magnetic circular dichroism; phase transition

Autoři

Keavney, D.; Choi, Y.; Holt, M.; Uhlíř, V.; Arena, D.; Fullerton, E.; Ryan, P.; Kim, J.

Vydáno

1. 12. 2018

ISSN

2045-2322

Periodikum

Scientific Reports

Ročník

8

Číslo

1778

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

7

Strany počet

7

BibTex

@article{BUT153340,
  author="Keavney, D. and Choi, Y. and Holt, M. and Uhlíř, V. and Arena, D. and Fullerton, E. and Ryan, P. and Kim, J.",
  title="Phase Coexistence and Kinetic Arrest in the Magnetostructural Transition of the Ordered Alloy FeRh",
  journal="Scientific Reports",
  year="2018",
  volume="8",
  number="1778",
  pages="1--7",
  doi="10.1038/s41598-018-20101-0",
  issn="2045-2322"
}