During his studies, Jack Thomas-Hunt, motivated by the advancement of spintronic devices, revisited the structural studies of the Double-Umbrella magnetic phase of terbium iron garnet(Tb₃Fe₅O₁₂, TbIG). Jack Thomas-Huntfocused on the complementary magnetic probes of neutron diffraction and resonant X-ray scattering giving revelations of precious insights to the subtleties and contrasts in the non-collinear magnetic structure of TbIG, both in bulk crystals and technological relevant thin films.

The investigations have proved to support theoretical advancements elsewhere focussing on the role of the terbium crystal field anisotropy. Serving as a basis for further work to continue to exploit the spin and orbital degrees of freedom available in TbIG, for future spintronic applications.

The PhD degree was completed at the Department of Chemistry, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Thursday 21 May 2026 at 12:45
Place: iNANO AUD (building 1593-012) The iNANO House
Gustav Wieds Vej 14

Title of dissertation:Neutron and X-ray Diffraction Studies of Terbium Iron Garnet Motivated by Spintronic Applications
Contact information: Jack G. Thomas-Hunt, e-mail: jth@chem.au.dk, tel.: +45 31419234
Members of the assessment committee:
Professor Jon Goff, Department of Physics, Royal Holloway University of London, United Kingdom
Dr Russell Ewings, Diffraction and Muons Science Head, ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot, ​United Kingdom
Associate Professor Marianne Glasius (chair), Department of Chemistry, Aarhus University
Main supervisor:
Professor Mogens Christensen, Deparment of Chemistry, Aarhus University
Co-supervisor:
Lead Scientist Dr. Dan Mannix, European Spallation Source, Lund, Sweden
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Natural Sciences/GSNS, Ny Munkegade 120, building 1521, 8000 Aarhus C.