Colossal magnetoresistance in Mn2+ oxypnictides NdMnAsO1-xFx

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Abstract

Colossal magnetoresistance is a rare phenomenon in which the electronic resistivity of a material can be decreased by orders of magnitude upon application of a magnetic field. Such an effect could be the basis of the next generation of memory devices. Here we report CMR in the antiferromagnetic oxypnictide NdMnAsO1-xFx as a result of competition between an antiferromagnetic insulating phase and a paramagnetic semiconductor upon application of a magnetic field. Mn2+ oxypnictides are relatively unexplored, and tailored synthesis of novel compounds could result in an array of materials for further investigation and optimization.

Original languageEnglish
Pages (from-to)8766-8769
Number of pages4
JournalJournal of the American Chemical Society
Volume134
Issue number21
DOIs
Publication statusPublished - 30 May 2012

Keywords

  • phase-diagram
  • superconductivity
  • resistivity
  • systems
  • earth
  • metal

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