Abstract
Recent heat capacity and neutron diffraction measurements carried out on liquid equiatomic alkali-lead (APb) alloys give unambiguous evidence for the survival of Zintl ions in the liquid. The presence of polyvalent anionic species, Pb4 4-4 is responsible for the anomalous temperature dependence of the heat capacity, whose magnitude decreases from ~80 J mol-1 K-1 in the vicinity of the melting point to ~40 J mol-1K-1 at ~300 K above the melting point. A first sharp diffraction peak (FSDP) is obtained at wavevectors of Q ~1 Å-1 in the total structure factor, which is a signature of intermediate-range ordering. Models based on the presence of A4Pb4 structural units in the liquid are used to interpret the changes in the width and position of the FSDP when the alkali metal, A, is varied from Na to Cs.
Article Note
*Author to whom all correspondence and reprint orders should be addressed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Meijer, J. A., Geertsma, W., and van der Lugt, W. J. Phys. F: Metal Phys. 15, 899 (1985).
van der Lugt, W. and Geertsma, W. Can. J. Phys. 65, 326 (1987).
van der Lugt, W. and Meijer, J. Amorphous and Liquid MaterialsLöscher, E., Fritzsch, G., and Jaccuci, G., eds., Martinus Nijhoff (1987), Dordrecht.
Saboungi, M. -L., Herron, S. J., and Kumar, R. Ber. Bunsenges. Phys. Chim. 89, 375 (1985).
Saboungi, M. -L., Leonard, S. R., and Ellefson, J. J. Chem. Phys. 85, 6072 (1986).
Tumidajski, P. T., Petric, A., Takenake, T., Saboungi, M. -L., and Pelton, A. D., in press.
Saboungi, M. -L., Reijers, H. T. J., Blander, M., and Johnson, G. K. J. Chem. Phys. 89, 5869 (1988);
Johnson, G. K. and Saboungi, M. -L. J. Chem. Phys. 86, 6376 (1987).
. Saboungi, M. -L., Blomquist, R., Volin, K., and Price, D. L., J. Chem. Phys. 87, 2278 (1987);
Reijers, H. T. J., van der Lugt, W., and van Dijk, C. Physica B 144, 404 (1987).
Saboungi, M. -L., Marr, J. J., and Blander, M. J. Chem. Phys. 68,1375 (1978).
Nguyen, V. T. and Enderby, J. E. Philos. Mag. 35, 1013 (1977).
Mott, N. F. and Davis, E. A. Electronic Processes in Noncrystalline MaterialsOxford, Clarendon Press (1979).
Reijers, H. T. J., Saboungi, M. -L., Richardson, J. W., Volin, K., Price, D. L., and van der Lugt, W., in press.
Price, D. L., Moss, S. C., Reijers, R., Saboungi, M. -L., and Susman, S. J. Phys. C: Solid State Phys. 21, L1069 (1988).
Zintl, E., Goubeau, J., and Dullenkopf, W. Z. Physik. Chem. Abt A. 154, 1 (1931).
Moss, S. C. and Price, D. L. Physics of Disordered MaterialsAdler, D., Fritzsche, H., and Ovshinsky, S. R., eds., Plenum, New York (1985), p. 77.
Andersen, H. C., Weeks, J. D., and Chandler, D. Phys. Rev. A. 4, 1597 (1971).
Geertsma, W., Dijkstra, J., and van der Lugt, W. J. Phys. F: Metal Phys. 14, 1833 (1984).
Bhatia, A. B. and Thornton, D. E. Phys. Rev. B2, 3004 (1970).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1990 Springer Science+Business Media New York
About this chapter
Cite this chapter
Saboungi, ML., Johnson, G.K., Price, D.L., Reijers, H.T.J. (1990). Structural and Thermodynamic Evidence for the Survival of Zintl Ions Through the Melting Process. In: Hastie, J.W. (eds) Materials Chemistry at High Temperatures. Materials Chemistry at High Temperatures, vol 1. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-4612-0481-7_24
Download citation
DOI: https://doi.org/10.1007/978-1-4612-0481-7_24
Publisher Name: Humana Press, Totowa, NJ
Print ISBN: 978-1-4612-6781-2
Online ISBN: 978-1-4612-0481-7
eBook Packages: Springer Book Archive