Magnetic and Transport Properties in Ion-Irradiated Cr2AlC

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Contributors

  • Joao S. Cabaco - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Ulrich Kentsch - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Fangchao Long - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Fabian Ganss - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Jürgen Lindner - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Jürgen Faßbender - , Chair of Applied Solid State Physics, Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Christoph Leyens - , Chair of Materials Technology (Author)
  • Rantej Bali - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Richard Boucher - , Chair of Materials Technology (Author)

Abstract

The presence of open-volume defects, such as vacancies, can significantly alter the functional properties of a material, including its structure and electronic transport. This study employs ion irradiation using inert ions (Ar+) and transition metal ions (Co+) at fluences of 1012-1015ions· cm-2 to achieve systematic disorder in the multilayer structure of MAX-phase Cr2AlC. It is shown that the magnitude of the paramagnetic response of Cr2AlC increases with ion fluence, regardless of the dopant used. A combination of isolated moments in defect sites with J=1/2 and magnetic clusters are used to explain this behavior. Low-temperature (< 30 K) resistivity measurements show local minima and sudden up(down)-turns with decreasing temperature, which, together with unusual MR in this temperature range, suggest the presence of quantum transport effects, such as the Kondo effect.

Details

Original languageEnglish
Title of host publication2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-2
ISBN (electronic)9798350362213
Publication statusPublished - 2024
Peer-reviewedYes

Conference

Title2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024
Duration5 - 10 May 2024
CityRio de Janeiro
CountryBrazil

Keywords