Pressure and magnetic field effects on electrical resistivity and thermopower of YTbCo system
Journal of the Physical Society of Japan, ISSN: 0031-9015, Vol: 77, Issue: 6
2008
- 8Citations
- 6Captures
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Article Description
The electrical resistivity ρ and thermopower S of the Laves phase YTbCo alloy system have been measured in magnetic fields up to 10 T and under pressures up to 8 GPa in the temperature range from 1.5 to 300 K. The residual resistivity of the alloys peaks at the critical composition x ≈ 0:2 of the onset of 4f-moment long-range magnetic order in the Tb sublattice. In the magnetically ordered region of the phase diagram x > x, an anomalous large positive magnetoresistivity and a pressure effect on resistivity are observed. The variation of the resistivity with alloy composition, magnetic field, and pressure are attributed to the scattering of conduction electrons due to magnetic static disorder within the partially ordered Co 3d itinerant subsystem. The evolution of the temperature dependence of thermopower with pressure are in agreement with this conduction mechanism. ©2008 The Physical Society of Japan.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=54349118409&origin=inward; http://dx.doi.org/10.1143/jpsj.77.064704; http://journals.jps.jp/doi/10.1143/JPSJ.77.064704; http://journals.jps.jp/doi/pdf/10.1143/JPSJ.77.064704; https://journals.jps.jp/doi/10.1143/JPSJ.77.064704; https://www.jstage.jst.go.jp/article/jpsj/77/6/77_6_064704/_article/-char/en/; https://www.jstage.jst.go.jp/article/jpsj/77/6/77_6_064704/_article/-char/ja/
Physical Society of Japan
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