Characterising Ion-Irradiated FeCr: Hardness, Thermal Diffusivity and Lattice Strain

Thermal annealing study of swift heavy-ion irradiated zirconia

Sintered samples of monoclinic zirconia (α-ZrO2) have been irradiated at room temperature with 6.0-GeV Pb ions in the electronic slowing down regime. X-ray diffraction (XRD) and micro-Raman spectroscopy measurements showed unambiguously that a transition to the ‘metastable’ tetragonal phase (β-ZrO2) occurred at a fluence of 6.5x10 cm for a large electronic stopping power value (≈ 32.5 MeV μm). ...

Superlattice interface and lattice strain measurement by ion channeling

The ion-beam channeling technique has been used to characterize the interface and the first few layers of [100] GaSb/AlSb superlattice structures. Strain caused by alternating tensile and compressive stress has been detected by measuring the oscillation of the )110]-aligned direction with depth. From the angular displacement and its oscillation, the amount of strain in the superlattice has been...

Measurement Thermal Conductivity and Thermal Diffusivity of Chromium Nanofluids

In this study, nanofluids of Chromium (Cr) in water, Ethylene Glycol and Ethanol have been prepared using single step method. The thermal conductivity and diffusivity of these nanofluids were measured via hot wire-photothermal deflection technique. Based on finite difference method (FDM) temperature distribution and photothermal deflection caused by the hot wire inside nanofluids was obtained. ...

Thermal effects on lattice strain in -Fe under pressure

We compute the c /a lattice strain versus temperature for nonmagnetic hcp iron at high pressures using both first-principles linear response quasiharmonic calculations based on the full potential linear-muffin-tin-orbital LMTO method and the particle-in-cell PIC model for the vibrational partition function using a tight-binding total-energy method. The tight-binding model shows excellent agreem...

Thermal Diffusivity of Ceramics During Neutron Irradiation