ANBUG-AINSE Neutron Scattering Symposium, AANSS 2018

Session

Topical Session 4: Physics

20 Nov 2018, 09:45

AINSE Conference Centre New Illawarra Road Lucas Heights NSW 2234 Australia

39. Fabrication of Sub-Stoichiometric Ti2O3 for Room Temperature Thermoelectric Energy Regeneration: Tuning of Structural and Electronic Properties via Defects Engineering

Jack Yang (School of Materials Science and Engineering, UNSW)

20/11/2018, 09:45

Physics

Oral

Titanium oxides has drawn extensive attention as functional electronic materials in the past few years, due to their unique layered structure and physical properties. Sub-stoichiometric titania are particularly interesting non-toxic materials for thermoelectric applications because of their high electrical conductivity with possible low phonon thermal conductivities originated from phonon...

16. Structure and dynamics in photovoltaic metal hydrides

Katherine Chea (RMIT University)

20/11/2018, 10:05

Physics

Oral

Solar cell technology is an active area of research with the quest to improve the efficiency of solar cells to above the current value of 44% [1]. Hot carrier solar cells are particular types of cells which may enable higher efficiencies to be obtained. However, these are only feasible where there is a sufficiently large band gap in the phonon dispersion of the bulk material to minimise energy...

32. Neutron spectroscopy of α-Fe2O3 nanorods: Direct detection of long-range spin wave excitations

Dr David Cortie (University of Wollongong)

20/11/2018, 10:25

Physics

Oral

We present time-of-flight neutron spectroscopy data from PELICAN on α-Fe2O3 nanorods with an average length of 300 ± 100 nm and diameter of 60 ± 10 nm. A strong quasi-elastic neutron signal is associated with absorbed water on the nanoparticle powder, which can be removed through heat treatment. After suppressing the QENS signal, it is possible to observe weak spin wave excitations originating...