A03
X-ray absorption spectroscopy under external stimuli – microscopic understanding and tailoring hysteresis

Overview

A combination of Mössbauer/X-ray spectroscopy and X-ray microscopy will be employed to derive a microscopic element-specific understanding of hysteresis in permanent magnet materials to disentangle their intrinsic and extrinsic properties. With our new ULMAG setup (with projects A01, A10, B05) we can simultaneously apply X-ray spectroscopy and diffraction techniques with magnetization and other macroscopic properties to understand their interrelation by comparison with ab initio theory and ML approaches. The sample systems will range from thin film model systems grown in project A02, over bulk samples from project A01 to compositionally inhomogeneous samples by our designated Mercator Fellow Nora Dempsey and project A10.

Team

  Name Contact
Dr. Katharina Ollefs
+49 (0)203 379-2387
M.Sc. Philipp Klaßen
+49 (0)203-379-3673
MD 267