Magnetoresistance and magnetothermopower of nitrogen-annealed RE1.2Sr1.8Mn2O7+δ (RE = Nd, Pr)

C. S. Sheu, M. S. Huang, T. W. Wu, C. J. Liu

Research output: Contribution to journalArticle

Abstract

We report measurements of resistance and thermopower of RE1.2Sr1.8Mn2O7+δ (RE = Nd, Pr) ceramics up to a magnetic field of 5 T. Nitrogen annealing has dramatic effects on the transport in reducing the resistivity, shifting peak resistivity to a higher temperature, and shifting thermopower to more negative values. The value of ΔJT increases as a result of nitrogen annealing, indicating an enhanced Jahn-Teller distortion due to the increased Mn3+ concentration. These results are consistent with the effects of nitrogen annealing on the transport of RE = La.

Original languageEnglish
Pages (from-to)192-194
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume239
Issue number1-3
DOIs
Publication statusPublished - 2002 Feb 1

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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