Large magnetoresistances and non-Ohmic conductivity in EuWO1+xN2-x

A. Kusmartseva, M. Yang, J. Oro-Sole, A. M. Bea, A. Fuertes, J. P. Attfield, Paul Attfield

Research output: Contribution to journalArticlepeer-review

Abstract

The magnetic field and voltage dependent electronic transport properties of EuWO1+xN2-x ceramics are reported. Large negative magnetoresistances are observed at low temperatures, up to 70% in the least doped (x=0.09) material. Non-Ohmic conduction emerges below the 12 K Curie transition. This is attributed to a microstructure of ferromagnetic conducting and antiferromagnetic insulating regions resulting from small spatial fluctuations in the chemical doping.

Original languageEnglish
Article number022110
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume95
Issue number2
DOIs
Publication statusPublished - 13 Jul 2009

Keywords

  • antiferromagnetic materials
  • ceramics
  • Curie temperature
  • doping
  • europium compounds
  • ferromagnetic materials
  • giant magnetoresistance
  • magnetisation
  • OXYNITRIDES

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