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Updated: Aug 18, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Ultrafast dynamics of a ferromagnetic nanocomposite
Kristen S Buchanan1, Xiaobin Zhu, Alkiviathes Meldrum
1Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1, USA. buchanan@anl.gov
Abstract:
Ensembles of iron nanocrystals up to 25 nm in diameter embedded in SiO(2) were found to exhibit an ultrafast magnetic response to a transient out-of-plane magnetic field. The response time varies as a function of in-plane bias magnetic field with the fastest rise times, as short as 26 ps, observed for both zero and high bias fields (140 kA/m). Analytical modeling and micromagnetic simulations confirm that magnetostatic interactions between nanoparticles play an important role in the dynamic response.
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