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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Thermal Transport in Crystalline and Non-crystalline Solids: Theory and Experiments
Presentation Title Nano- and Micro-scale Thermal Transport in Swift heavy Ion Irradiated Oxides
Author(s) Azat Abdullaev, Vinay S Chauhan, Jacques O'Connel, Vladimir Skuratov, Arno Janse van Vuuren, Marat Khafizov, Zhandos N Utegulov
On-Site Speaker (Planned) Azat Abdullaev
Abstract Scope We investigated thermal transport in swift heavy ion irradiated oxide materials: Al2O3, MgO and Y3Al5O12 (YAG), irradiated by 167 MeV Xe ions at 1012 – 1014 ions/cm2 fluences. We observed ion tracks in sapphire and YAG at low dose. In Al2O3, the tracks overlap at high fluences resulting in sub-surface amorphization. Thermal transport assessment was conducted by time-domain thermoreflectance (TDTR) and spatial domain thermoreflectance (SDTR) methods. Combination of them allowed us to isolate conductivities of different damage regions characterized by distinct microstructure evolution regimes. Nanoscale thermal conductivity of thin amorphous and cross-plane conductivity in ion track regions was measured using TDTR. In-plane and cross plane thermal conductivities within ion track region was simultaneously measured using SDTR. These measurements reveal anisotropic thermal conductivity within Al2O3 ion track region. Simultaneous measurement of thermal transport parallel and normal to ion tracks presents a unique configuration to study nanoscale thermal transport in insulating materials.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Advancing Insights into Phonon Thermal Transport with Theory/experiment Interactions
Determining the Impact of Material Microstructure on the Effective Thermal Conductivity Using Mesoscale Simulation and Modeling
Electronic Structure and Thermal Transport Measurement of GdxSb2-xTe3
Impact of Irradiation Induced Nanoscale Defects on Optical and Thermal Properties of Cerium Dioxide
Influence of Irradiation-induced Microstructural Defects on the Thermal Conductivity of Single Crystal Thorium Dioxide
Investigations of the Thermal Conductivity of UN
Lattice Thermal Conductivity of Quartz at High Pressure and Temperature from the Boltzmann Transport Equation
Mesoscale Modeling of Thermal Conductivity of a UO2 and BeO Composite Nuclear Fuel
Multi-scale Thermal Transport Characterization of Nuclear Fuels
Multi Scale Modeling of the Thermal Conductivity: Combining First Principle Calculations with Monte Carlo
Nano- and Micro-scale Thermal Transport in Swift heavy Ion Irradiated Oxides
Non-linear Thermal Resistance Trend with Increasing Bilayer Density
Nonlinear Stopping of Phonons in Thermoelectric Crystal PbSe
Phonon Dispersion and Linewidth in ThO2 Measured by Neutron Scattering
Physics-guided Machine-Learning Design of Aperiodic Superlattices with Maximum Localization of Coherent Phonons
Structural, Transport, Magnetic, and Thermodynamic Studies of Delta-phase of Uranium
Study of Thermal Transport Properties of Thorium Dioxide Single Crystals
The Degradation of the Thermal Conductivity of Oxide Nuclear Fuel
Thermal Transport in Crystalline Solids with Irradiation-Induced Defects: Computational Modeling and Experiments
Thermal Transport in Nanostructured Crystalline and Disordered Materials
Thermal Transport in ThO2
Thermal Transport Properties of Uranium Aluminides by First-principles

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