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 language | English |
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Pages (from-to) | 192-194 |
Number of pages | 3 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 239 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2002 Feb 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics