Anomalous Hall effect was observed in 120nm thick polycrystalline films of Mn3Ge, deposited on STO substrates at 450°C. The polycrystalline target sample shows a hexagonal single phase with a TC of 350K. The hysteresis in the Hall and the magnetic measurements show similar values and a higher Hall resistivity at higher temperatures. Longitudinal, Hall resistivity and the magnetic data are consistent with no significant change up to temperature of 50K with the magnetoresistance becoming negative at higher temperatures.About the presenter
Wafa Afzal is a PhD student and experimental condensed-matter physicist working with Prof Xiaolin Wang at the University of Wollongong, with experience in thin-films of magnetic nanoparticle dispersions in polymers, and has studied surface and magnetic states of these films using atomic force microscopy and magnetic force microscopy.
For her PhD within FLEET’s Enabling Technology Theme A and Research theme 1, atomically thin materials, she will fabricate and analyse the transport properties of topological Weyl semi-metals.