Skip to main content
×
×
Home

Synthesis of Na1-xLnxNbO3 (Ln=La, Nd, Sm, Gd) and their Structures and Electrical Properties

  • Wataru Sugimoto (a1), Masahiro Naito (a1), Yoshiyuki Sugahara (a1) and Kazuyuki Kuroda (a1) (a2)
Abstract

Polycrystalline samples of Na1-xLnxNbO3 (Ln=La, Nd, Sm, Gd) were synthesized by solid-state reactions. Reduced niobates were obtained as single-phase perovskites for x=0.05 and 0.1 when Ln=La and Nd and x=0.05 when Ln=Sm. The Gd-substituted samples could not be prepared under the synthetic conditions studied. Compositional analysis of the products revealed a slight amount of sodium loss during synthesis. The structural parameters obtained from Rietveld analysis revealed an increase in unit-cell volume. All of the obtained samples showed semiconducting behavior. Similar semiconducting behavior was observed for the same x value, suggesting the weak influence of the different Ln species to the electrical properties.

Copyright
References
Hide All
1. Goodenough, J.B., Prog. Solid State Chem., 5, 145 (1972).
2. Cox, P.A., Transition Metal Oxides, Clarendon Press, Oxford, 1992.
3. Rao, C.N.R. and Raveau, B., Transition Metal Oxides, VCH, 1995.
4. Ridgley, D. and Ward, R., J. Am. Ceram. Soc., 77, 6132 (1955).
5. Hessen, B., Sunshine, S.A., Siegrist, T. and Jimenez, R., Mater. Res. Bull., 26, 85 (1991).
6. Isawa, K., Sugiyama, J., Matsuura, K., Nozaki, A. and Yamauchi, H., Phys. Rev. B, 47, 2849 (1993).
7. Kreiser, R.R. and Ward, R., J. Solid State Chem., 1, 368 (1970).
8. Casais, M.T., Alonso, J.A., Rasines, I. and Hidalgo, M.A., Mater. Res. Bull., 30, 201 (1995).
9. Ellis, B., Doumerc, J., Dordor, P., Pouchard, M. and Hagenmuller, P., Solid State Commun., 51, 913 (1984).
10. Kopnin, E.M., Istomin, S.Ya., D'yachenko, O.G., Antipov, E.V., Bordet, P., Capponi, J.J., Chaillout, C., Marezio, M., Brion, S.de, and Souletie, B., Mater. Res. Bull., 30, 1379 (1995).
11. Abakumov, A.M., Shpanchenko, R.V. and Antipoc, E.V., Mater. Res. Bull., 30, 97 (1995).
12. Sugimoto, W., Tahara, T., Sugahara, Y. and Kuroda, K., in Solid State Chemistry of'lnorganic Materials, edited by Jacobson, A., Davies, P., Vanderah, T. and Torardi, C. (Mater. Res. Soc. Proc. 453, Boston, MA 1997), p. 361366.
13. For example; (a) Maclean, D.A., Ng, H.-K. and Greedan, J.E., J. Solid State Chem., 30, 35 (1979);
(b) Greedan, J.E., J. Less-Common Metals, 111, 335 (1985);
(c) Crandles, D.A., Timusk, T., Garret, J.D. and Greedan, J.E., Physica C, 201, 407 (1992).
14. Izumi, F., in The Rietveld Method, edited by Young, R.A., (Oxford University Press, Oxford 1993), p. 236253.
15. Kim, Y.I. and Izumi, F., J. Ceram. Soc. Jpn. 102, 401 (1994).
16. Shannon, R.D., Acta Cryst., A32, 751 (1976).
17. Sakowski-Cowlcy, A.C.. Lukaszcwicz, K. and Megaw, H., Acta. Cryst., 1325, 851 (1969).
18. Ishikawa, K., Adachi, G. and Shiokawa, J., Bull. Chem. Soc. Jpn., 55, 3317 (1982).
19. Hamada, D., Sugimoto, W., Sugahara, Y. and Kuroda, K., J. Ceram. Soc. Jpn, 105, 284 (1997).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

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