Hostname: page-component-6bf8c574d5-xtvcr Total loading time: 0 Render date: 2025-02-22T07:59:49.022Z Has data issue: false hasContentIssue false
  • English
  • Français

Specific Heat in the Pu-Am system

Published online by Cambridge University Press:  26 February 2011

Ladislav Havela ,
Pavel Javorský ,
Alexander Shick ,
Franck Wastin  and
Eric Colineau
Ladislav Havela
Affiliation:
havela@mag.mff.cuni.cz, Charles University, Dept. of Condensed Matter Physics, Ke Karlovu 5, Prague 2, CZ 121 16, Czech Republic, +420-221911351, +420-221911351
Pavel Javorský
Affiliation:
javor@mag.mff.cuni.cz, Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, CZ-12116, Czech Republic
Alexander Shick
Affiliation:
shick@fzu.cz, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, CZ-18221, Czech Republic
Franck Wastin
Affiliation:
franck.wastin@ec.europa.eu, European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, Karlsruhe, D-76125, Germany
Eric Colineau
Affiliation:
Eric.COLINEAU@cec.eu.int, European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, Karlsruhe, D-76125, Germany
Get access

Abstract

Specific heat of Pu doped with Am was studied for several Am concentrations (8-20%) ensuring the δ-Pu fcc structure. The results reveal that the γ value of the low temperature specific heat is lower than originally assumed (γ of 35 - 55 mJ/mol K2 can be deduced for Pu-8%Am) and does not increase with the Am-induced lattice expansion. The findings can be taken as an indication of the absence of the Pu-5f states at the Fermi level.

Keywords

Puspecific heatalloy
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 986: Symposium OO – Actinides 2006 – Basic Science, Applications and Technology , 2006 , 0986-OO04-02
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Smith, J. L., Stewart, G. R., Huang, C. Y., and Haire, R. G., J. Phys. (Paris) 40–C4, 138 (1979).Google Scholar
2. Mortimer, M. J., J. Phys. (Paris) 40–C4, 124 (1979).Google Scholar
3. Ho, J. C., Philips, N. E., and Smith, T. F., Phys.Rev.Lett. 17, 694 (1966).Google Scholar
4. Ott, H. R. and Fisk, Z., in: Handbook on the Physics and Chemistry of the Actinides, Freeman, A. J. and Lander, G.H., eds. (North-Holland, 1987) pp.85–225 Google Scholar
5. Lashley, J. C., Singleton, J., Migliori, A., Betts, J. B., Fisher, R. A., Smith, J. L., and McQueeney, R. J., Phys. Rev. Lett. 91, 205901 (2003).Google Scholar
6. Stewart, G. R. and Elliott, R. O., Conference Actinides 1981, Abstract Booklet, Lawrence Berkeley Laboratory, Berkeley, CA, 1981, p. 206.Google Scholar
7. Ellinger, F. H., Johnson, K. A., and Struebing, V. O., J. Nucl. Mat. 20, 83 (1966).Google Scholar
8. Javorský, P., Wastin, F., Colineau, E., Rebizant, J., Boulet, P., and Stewart, G., J. Nucl. Mat. 344, 50 (2005)Google Scholar
9. Bachmann, R., DiSalvo, F. J. Jr, Geballe, T. H., Greene, R. L., Howard, R. E., King, C. N., Kirsch, H. C., Lee, K. N., Schwall, R. E., Thomas, H.-U., and Zubeck, R. B., Rev. Sci. Inst. 43, 205 (1972).Google Scholar
10. Lashley, J. C., Hundley, M. F., Migliori, A., Sarrao, J. L., Pagliuso, P. G., Darling, T. W., Jaime, M., Cooley, J. C., Hults, W. L., Morales, L., Thoma, D. J., Smith, J. L., Boerio-Goates, J., Woodfield, B. F., Stewart, G. R., Fisher, R. A., and Phillips, N. E., Cryogenics 43, 369 (2003).Google Scholar
11. Javorský, P., Havela, L., Wastin, F., Colineau, E., and Bouëxière, D., Phys. Rev. Lett. 96, 156404 (2006).Google Scholar
12. Baclet, N., Dormeval, M., Havela, L., Fournier, J. M., Valot, C., Wastin, F., Gouder, T., Colineau, E., Walker, C. T., Bremier, S., Apostolidis, C., and Lander, G. H., Phys. Rev. B, in press.Google Scholar
13. Shick, A. B., Drchal, V., and Havela, L., Europhys. Lett. 69, 588 (2005).Google Scholar
14. Shick, A. B., Havela, L., Kolorenč, J., Drchal, V., Gouder, T., and Oppeneer, P. M., Phys. Rev. B 73 104415 (2006).Google Scholar
15. Shick, A., Kolorenc, J., Havela, L., Drchal, V., and Gouder, T., EPL 77, 17003 (2007).Google Scholar
16. Pourovskii, V. L., Katsnelson, M. I., Lichtenstein, A. I., Havela, L., Gouder, T., Wastin, F., Shick, A. B., Drchal, V., and Lander, G. H., Europhys. Lett. 74 479 (2006).Google Scholar