The Lattice Stiffening Transition in UO2 Single Crystals
Document Type
Article
Publication Date
11-21-2016
Abstract
The effective Debye temperatures (θDE) of the surface region of UO2 single crystals, prepared by the hydrothermal synthesis technique, were obtained from temperature-dependent x-ray photoemission in the temperature range of 300 K–623 K. A lattice stiffening transition, characterized by different regions of different effective Debye temperature, 500 ± 59 K below 475 K and 165 ± 21 K above 475 K is identified. A comparison of the temperature dependence of the effective UO2 Debye temperature, with the changes in the lattice expansion coefficient for UO2, support strong lattice-phonon interaction arising from the Jahn–Teller distortion.
DOI
10.1088/1361-648X/29/3/035005
Source Publication
Journal of Physics: Condensed Matter
Recommended Citation
Young, C. M., Petrosky, J. C., Mann, J. M., Hunt, E. M., Turner, D., & Dowben, P. A. (2017). The lattice stiffening transition in UO 2 single crystals. Journal of Physics: Condensed Matter, 29(3), 035005. https://doi.org/10.1088/1361-648X/29/3/035005
IOP citation style: Christopher Young et al 2017 J. Phys.: Condens. Matter 29 035005
Comments
This CHORUS-furnished Accepted Manuscript version is available for reuse under a CC BY-NC-ND 3.0 license. A 12-month embargo period was observed for posting the Accepted Manuscript.
The Version of Record of this article is published on a subscription basis, and is available to subscribers at the DOI link in the citation. The version of record for this article is protected by copyright. © 2016 IOP Publishing Ltd
The article was published online in November 2016, ahead of the print issue cited.