Published December 2018 | Version v1
Journal article Metadata-only

The Debye temperature of a single crystal thorium-uranium dioxide alloy

Creators

  • 1. Department of Engineering Physics, Air Force Institute of Technology, Wright-Patterson Air Force Base, OH (United States)
  • 2. National Air and Space Intelligence Center (NASIC), Wright Patterson, Air Force Base, OH (United States)
  • 3. Southwest Ohio Council for Higher Education, Dayton, OH (United States)
  • 4. Department of Physics, Wright State University, Dayton, OH (United States)
  • 5. Air Force Research Laboratory, Sensors Directorate 2241 Avionics Circle, Wright-Patterson Air Force Base, OH (United States)

Description

The effective Debye temperature (direct difference DE) of the surface of a single crystal of U0.71Th0.79O2 alloy prepared by hydrothermal synthesis is obtained from temperature-dependent X-ray photoemission in the temperature range of 300-623 K. The effective average Debye temperature is determined to be 217 ± 24 K. X-ray fluorescence (XRF) spectroscopy confirms the crystal's composition as U0.71Th0.79O2. Photoemission spectroscopy reveals both thorium and uranium 4f states, which includes uranium and thorium in 4+ oxidation states. The Debye temperature of the single crystal U0.71Th0.79O2 alloy, as measured via photoemission, is lower than urania or thoria literature values, indicating either higher defect scattering or the presence of added vibrational modes within the alloyed sample. (copyright 2018 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

Availability note (English)

Available from: http://dx.doi.org/10.1002/pssr.201800436

Additional details

Identifiers

DOI
10.1002/pssr.201800436;

Publishing Information

Journal Title
Physica Status Solidi. Rapid Research Letters (Online)
Journal Volume
12
Journal Issue
12
Journal Page Range
p. 1-5
ISSN
1862-6270
CODEN
PSSRCS

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
50009880
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BINDING ENERGY; CHEMICAL COMPOSITION; DEBYE TEMPERATURE; HYDROTHERMAL SYNTHESIS; LATTICE VIBRATIONS; MONOCRYSTALS; SPECIFIC HEAT; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; THORIUM COMPOUNDS; URANIUM DIOXIDE; VIBRATIONAL STATES; X-RAY FLUORESCENCE ANALYSIS; X-RAY PHOTOELECTRON SPECTROSCOPY
Descriptors DEC
ACTINIDE COMPOUNDS; CHALCOGENIDES; CHEMICAL ANALYSIS; CRYSTALS; ELECTRON SPECTROSCOPY; ENERGY; ENERGY LEVELS; EXCITED STATES; NONDESTRUCTIVE ANALYSIS; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHYSICAL PROPERTIES; SPECTROSCOPY; SYNTHESIS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; URANIUM COMPOUNDS; URANIUM OXIDES; X-RAY EMISSION ANALYSIS

Optional Information

Notes
With 4 figs.