Observation of a temperature dependent asymmetry in the domain structure of a Pd-doped FeRh epilayer

C. J. Kinane*, M. Loving, M. A. de Vries, R. Fan, T. R. Charlton, J. S. Claydon, D. A. Arena, F. Maccherozzi, S. S. Dhesi, D. Heiman, C. H. Marrows, L. H. Lewis, Sean Langridge

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Using x-ray photoelectron emission microscopy we have observed the coexistence of ferromagnetic and antiferromagnetic phases in a (3 at%) Pd-doped FeRh epilayer. By quantitatively analyzing the resultant images we observe that as the epilayer transforms there is a change in magnetic domain symmetry from predominantly twofold at lower temperatures through to an equally weighted combination of both four and twofold symmetries at higher temperature. It is postulated that the lowered symmetry Ising-like nematic phase resides at the near-surface of the epilayer. This behavior is different to that of undoped FeRh suggesting that the variation in symmetry is driven by the competing structural and electronic interactions in the nanoscale FeRh film coupled with the effect of the chemical doping disorder.

Original languageEnglish
Article number113073
Number of pages16
JournalNew Journal of Physics
Volume16
DOIs
Publication statusPublished - 26 Nov 2014

Keywords / Materials (for Non-textual outputs)

  • FeRh
  • magnetic thin films
  • magnetic phase transitions
  • nucleation
  • ferromagnetism
  • antiferromagnetism
  • domain structures
  • MAGNETIC PHASE-TRANSITIONS
  • ALLOY
  • TRANSFORMATION
  • FILMS

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