Skip to main content Accessibility help
×
Home

Local Structure and Vibrational Properties of α-Pu, α-U, and the α-U Charge Density Wave

  • Erik J. Nelson (a1), Patrick Allen (a2), Kerri J. Blobaum (a3), Mark A. Wall (a4) and Corwin H. Booth (a5)...

Abstract

The local atomic environment and vibrational properties of monoclinic α-Pu, orthorhombic α-U, and the α-U charge-density-wave (CDW) modulation are examined by extended x-ray absorption fine structure spectroscopy (EXAFS). Debye-Waller factors from temperature-dependent EXAFS measurements are fit to a correlated Debye model. The observed Pu-Pu bond Debye temperature is θ cD (α-Pu) = 162 ± 5 K for the pure α-Pu phase. The temperature dependence of the U-U nearest neighbor and second nearest neighbor Debye-Waller factors exhibits a sharp discontinuity in slope near TCDW = 43 K, the transition temperature at which the charge-density wave (CDW) in α-U occurs. Our measurement of the CDW using EXAFS is the first observation of the structure of the CDW in polycrystalline α-U.

Copyright

References

Hide All
1 Zachariasen, W. H. and Ellinger, F. H., Acta. Cryst. 16, 777 (1963).
2 Barrett, C. S., Mueller, M. H., and Hitterman, R. L., Phys. Rev. 129, 625 (1963).
3 Smith, J. L. and Kmetko, E. A., J. Less-Common Metals 90, 83 (1983).
4 Willis, J. M. and Eriksson, O., Phys. Rev. B 45, 13879 (1992).
5 Timofeeva, L. F., in Aging Studies and Lifetime Extension of Materials, edited by Mallinson, L. G. (Kluwer Academic / Plenum Publishers, 2001), p. 191.
6 Crummett, W. P., Smith, H. G., Nicklow, R. M., and Wakabayashi, N., Phys. Rev. B 19, 6028 (1979).
7 Smith, H. G., Wakabayashi, N., Crummett, W. P., Nicklow, R. M., Lander, G. H., and Fisher, E. S., Phys. Rev. Lett. 44, 1612 (1980).
8 Marmeggi, J.C., Delapalme, A., Lander, G. H., Vettier, C., and Lehner, N., Solid State Comm. 43, 577 (1982).
9 Marmeggi, J.C., Delapalme, A., Lander, G. H. and Vettier, C., Physica B 120, 263 (1983).
10 Smith, H. G. and Lander, G. H., Phys. Rev. B 30, 5407 (1984).
11 van Smaalen, S. and George, T. F., Phys. Rev. B 35, 7939 (1987).
12 Marmeggi, J.C., Lander, G. H., van Smaalen, S., Brückel, T., and Zeyen, C. M. E., Phys. Rev. B 42, 9365 (1990).
13 Grübel, G., Axe, J. D., Gibbs, D., Lander, G. H., Marmeggi, J.C., and Brückel, T., Phys. Rev. B 43, 8803 (1991).
14 Lander, G. H., Fisher, E. S., and Bader, S. D., Adv. in Phys. 43, 1 (1994).
15 Manley, M. E., Fultz, B., McQueeney, R. J., Brown, C. M., Hults, W. L., Smith, J. L., Thoma, D. J., Osborn, R., and Robertson, J. L., Phys. Rev. Lett. 86, 3076 (2001).
16 Koningsberger, D. and Prins, R., eds., X-Ray Absorption: Principles, Applications, Techniques of EXAFS, SEXAFS, XANES. Wiley, New York, 1988.
17 Hall, R. O. A. and Mortimer, M. J., Low, J. Temp. Phys. 27, 313 (1977).
18 Crangle, J. and Temporal, J., J. Phys. F: Met. Phys. 3, 1097 (1973).
19 Fisher, E. S. and Dever, D., Phys. Rev. 170, 607 (1968).
20 Lashley, J. C., Lang, B. E., Boerio-Goates, J., Woodfield, B. F., Schmiedeshoff, G. M., Gay, E. C., McPheeters, C. C., Thoma, D. J., Hults, W. L., Cooley, J. C., Hanrahan, R. J. Jr, and Smith, J. L., Phys. Rev. B 63, 224510 (2001).
21 Cox, L. E., Martinez, R., Nickel, J. H., Conradson, S. D., and Allen, P. G., Phys. Rev. B 51, 751 (1995).
22 Faure, P., Deslandes, B., Bazin, D., Tailland, C., Doukhan, R., Fournier, J. M., and Falanga, A., J. Alloys Compd. 244, 131 (1996).
23 Richard, N., Faure, P., Rofidal, P., Truffier, J. L., and Bazin, D., J. Alloys Compd. 271–273, 879 (1998).
24 Allen, P. G., Henderson, A. L., Sylwester, E. R., Turchi, P. E. A., Shen, T. H., Gallegos, G. F., and Booth, C. H., Phys. Rev. B 65, 214107 (2002).
25 Dormeval, M., Baclet, N., Valot, C., Rofidal, P., and Fournier, J. M., J. Alloys Compd. 350, 86 (2003).
26 Wong, J., Krisch, M., Farber, D. L., Occelli, F., Schwartz, A. J., Chiang, T-C., Wall, M., Boro, C., and Xu, R., Science 301, 1078 (2003).
27 Espinosa, F. J., Villella, P., Lashley, J. C., Conradson, S. D., Cox, L. E., Martinez, R., Martinez, B., Morales, L., Terry, J., and Pereyra, R. A., Phys. Rev. B 63, 174111 (2001).
28 Nelson, E. J., Blobaum, K. J. M., Wall, M. A., Allen, P. G., Schwartz, A. J., and Booth, C. H., Phys. Rev. B 67, 224206 (2003).
29 Hayes, T. M. and Boyce, J. B., in Solid State Physics, edited by Ehrenreich, H., Seitz, F., and Turnbull, D. (Academic, New York, (1982)), Vol. 37, p. 173.
30 Li, G. G., Bridges, F., and Booth, C. H., Phys. Rev. B 52, 6332 (1995).
31 Crozier, E. D., Rehr, J. J., and Ingalls, R., in X-Ray Absorption: Principles, Applications, Techniques of EXAFS, SEXAFS, XANES, edited by Koningsberger, D. and Prins, R. (Wiley, New York, 1988), p. 373.
32 Beni, G. B. and Platzman, P. M., Phys. Rev. B 14, 1514 (1976).
33 Lawson, A. C., Goldstone, J. A., Cort, B., Sheldon, R. I., and Foltyn, E. M., J. Alloys and Compounds 213/214, 426 (1994).
34 Lee, J. A. and Waldron, M. B., in Inorganic Chemistry, Series Two (Baltimore: University Park Press, 1975), Vol. 7, Chap. 7, p. 250.
35 Lashley, J. C., Singleton, J., Migliori, A., Betts, J. B., Fisher, R. A., Smith, J. L., and McQueeny, R. J., Phys. Rev. Lett. 91, 205901 (2003).

Keywords

Local Structure and Vibrational Properties of α-Pu, α-U, and the α-U Charge Density Wave

  • Erik J. Nelson (a1), Patrick Allen (a2), Kerri J. Blobaum (a3), Mark A. Wall (a4) and Corwin H. Booth (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.