Skip to main content Accessibility help
×
Home

Crystal Structures and Thermoelectric Properties of Ru1-x Re x Si y Chimney-Ladder Compounds

  • Akira Ishida (a1), Norihiko L. Okamoto (a2), Kyosuke Kishida (a3), Katsushi Tanaka (a4) and Haruyuki Inui (a5)...

Abstract

The phase relationship of Re-alloyed Ru2Si3 and the variations of the crystal structures and thermoelectric properties of the Ru1-xRexSiy chimney-ladder phases have been studied as a function of the Re concentration. The Ru1-xRexSiy chimney-ladder phases are formed in a wide compositional range. Compositional formula of the chimney-ladder phases are determined to be Ru1-xRexSi1.5386+0.1783x (0.14 ≤ x ≤ 0.76), which are systematically deviated from the idealized composition conforming the valence electron counting rule: VEC=14. Measurements of thermoelectric properties of single crystals with different compositions reveals that the chimney-ladder phases exhibit n-type semiconducting behavior at low Re concentrations and p-type semiconducting behavior at high Re concentrations. These results suggests that the VEC=14 rule can be used for predicting the semiconducting behavior of the chimney-ladder phases through the adjustment of VEC values by substituting elements, producing p-type semiconductors for VEC<14 and n-type for VEC>14, with the carrier concentration related to the deviation from VEC=14.

Copyright

References

Hide All
1. Vining, C. B., AIP Conf. Proc. 246, 338 (1992).
2. Arita, Y., Mitsuda, S., Nishi, Y., Matsui, T., and Nagasaki, T., J. Nucl. Mat. 294, 202 (2001).
3. Ivanenko, L., Filonov, A., Shaposhnikov, V., Behr, G., Souptel, D., Schumann, J., Vinzelberg, H., Plotnikov, A., and Borisenko, V., Microelectronic Eng. 70, 209 (2003).
4. Simkin, B. A., Hayashi, Y., and Inui, H., Intermetallics 13, 1225, (2005).
5. Simkin, B. A., Ishida, A., Okamoto, N. L., Kishida, K., Tanaka, K., and Inui, H., Acta Mater. 54, 2857 (2006).
6. Jeitschko, W. and Parthé, E., Acta Cryst. 22, 417, (1967).
7. Nowotny, H., in The Chemistry of Extended Defects in Non-Metallic Solids, edited by Eyring, E. R., O'Keefe, M. (North-Holland, Amsterdam, 1970), p.223.
8. Pearson, W. B., Acta Cryst. B 26, 1044 (1970).
9. Fredrickson, D. C., Lee, S., Hoffmann, R., and Lin, J., Inorg. Chem. 43, 6151 (2004).
10. Fredrickson, D. C., Lee, S., Hoffmann, R., Inorg. Chem. 43, 6159 (2004).
11. Ye, H. Q. and Amelinckx, S., J. Solid State Chem. 61, 8 (1986).
12. Imai, Y. and Watanabe, A., Intermetallics 13, 233 (2005).
13. Susz, C. P., Muller, J., Yvon, K., Parthé, E., J. Less-Common Met. 71, P1 (1980).

Keywords

Crystal Structures and Thermoelectric Properties of Ru1-x Re x Si y Chimney-Ladder Compounds

  • Akira Ishida (a1), Norihiko L. Okamoto (a2), Kyosuke Kishida (a3), Katsushi Tanaka (a4) and Haruyuki Inui (a5)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed