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

Published online by Cambridge University Press:  26 February 2011

Erik J. Nelson ,
Patrick Allen ,
Kerri J. Blobaum ,
Mark A. Wall  and
Corwin H. Booth
Erik J. Nelson
Affiliation:
nelson87@llnl.gov, United States
Patrick Allen
Affiliation:
allen42@llnl.gov, Lawrence Livermore National Laboratory, L-125, P.O. Box 808, Livermore, CA, 94582, United States
Kerri J. Blobaum
Affiliation:
blobaum1@llnl.gov, United States
Mark A. Wall
Affiliation:
Wall1@llnl.gov, United States
Corwin H. Booth
Affiliation:
CHBooth@lbl.gov, United States
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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 θcD(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.

Keywords

bondingstructuralactinide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ03-09
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1 Zachariasen, W. H. and Ellinger, F. H., Acta. Cryst. 16, 777 (1963).Google Scholar
2 Barrett, C. S., Mueller, M. H., and Hitterman, R. L., Phys. Rev. 129, 625 (1963).Google Scholar
3 Smith, J. L. and Kmetko, E. A., J. Less-Common Metals 90, 83 (1983).Google Scholar
4 Willis, J. M. and Eriksson, O., Phys. Rev. B 45, 13879 (1992).Google Scholar
5 Timofeeva, L. F., in Aging Studies and Lifetime Extension of Materials, edited by Mallinson, L. G. (Kluwer Academic / Plenum Publishers, 2001), p. 191.Google Scholar
6 Crummett, W. P., Smith, H. G., Nicklow, R. M., and Wakabayashi, N., Phys. Rev. B 19, 6028 (1979).Google Scholar
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).Google Scholar
8 Marmeggi, J.C., Delapalme, A., Lander, G. H., Vettier, C., and Lehner, N., Solid State Comm. 43, 577 (1982).Google Scholar
9 Marmeggi, J.C., Delapalme, A., Lander, G. H. and Vettier, C., Physica B 120, 263 (1983).Google Scholar
10 Smith, H. G. and Lander, G. H., Phys. Rev. B 30, 5407 (1984).Google Scholar
11 van Smaalen, S. and George, T. F., Phys. Rev. B 35, 7939 (1987).Google Scholar
12 Marmeggi, J.C., Lander, G. H., van Smaalen, S., Brückel, T., and Zeyen, C. M. E., Phys. Rev. B 42, 9365 (1990).Google Scholar
13 Grübel, G., Axe, J. D., Gibbs, D., Lander, G. H., Marmeggi, J.C., and Brückel, T., Phys. Rev. B 43, 8803 (1991).Google Scholar
14 Lander, G. H., Fisher, E. S., and Bader, S. D., Adv. in Phys. 43, 1 (1994).Google Scholar
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).Google Scholar
16 Koningsberger, D. and Prins, R., eds., X-Ray Absorption: Principles, Applications, Techniques of EXAFS, SEXAFS, XANES. Wiley, New York, 1988.Google Scholar
17 Hall, R. O. A. and Mortimer, M. J., Low, J. Temp. Phys. 27, 313 (1977).Google Scholar
18 Crangle, J. and Temporal, J., J. Phys. F: Met. Phys. 3, 1097 (1973).Google Scholar
19 Fisher, E. S. and Dever, D., Phys. Rev. 170, 607 (1968).Google Scholar
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).Google Scholar
21 Cox, L. E., Martinez, R., Nickel, J. H., Conradson, S. D., and Allen, P. G., Phys. Rev. B 51, 751 (1995).Google Scholar
22 Faure, P., Deslandes, B., Bazin, D., Tailland, C., Doukhan, R., Fournier, J. M., and Falanga, A., J. Alloys Compd. 244, 131 (1996).Google Scholar
23 Richard, N., Faure, P., Rofidal, P., Truffier, J. L., and Bazin, D., J. Alloys Compd. 271–273, 879 (1998).Google Scholar
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).Google Scholar
25 Dormeval, M., Baclet, N., Valot, C., Rofidal, P., and Fournier, J. M., J. Alloys Compd. 350, 86 (2003).Google Scholar
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).Google Scholar
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).Google Scholar
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).Google Scholar
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.Google Scholar
30 Li, G. G., Bridges, F., and Booth, C. H., Phys. Rev. B 52, 6332 (1995).Google Scholar
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.Google Scholar
32 Beni, G. B. and Platzman, P. M., Phys. Rev. B 14, 1514 (1976).Google Scholar
33 Lawson, A. C., Goldstone, J. A., Cort, B., Sheldon, R. I., and Foltyn, E. M., J. Alloys and Compounds 213/214, 426 (1994).Google Scholar
34 Lee, J. A. and Waldron, M. B., in Inorganic Chemistry, Series Two (Baltimore: University Park Press, 1975), Vol. 7, Chap. 7, p. 250.Google Scholar
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).Google Scholar