In Situ Nanobeam Evaluation of Temperature and Thermal Gradient Dependence of the Magnetic Properties of a Gd3Fe5O12/Pt Protopype Spincalori

Thank you for reviewing our previous proposal.
The key problem is that the relevant properties of GdIG are highly temperature dependent. Even in bulk, the temperature dependence of properties such as the magnon spectrum and the magnetic anisotropy are just beginning to be predicted and understood (e.g. as for uniform stress effects on the total magnetization in Holzmann et al. ACS Appl. Nano Mater. 5, 1023 (2022). Spincaloritronics is far more complex because the temperature, stress, and magnetic domain pattern all vary at the nanoscale, motivating our work.
Three specific hypotheses will be tested: (1) that in regions with low temperature gradient the domain pattern will be consistent with temperature scaling laws, allowing us to extract domain wall energies, (2) that the magnetization in the region of the temperature gradient may differ from the bulk temperature dependence, and (3) that the stress induced by the temperature gradient may lead to a distinct magnetization distribution.