Simultaneous mapping of magnetic and atomic structure for direct visualization of nanoscale magnetoelastic coupling
Year: 2024
Type: preprint
Abstract: Achieving a correlative measurement of both magnetic and atomic structures at the nanoscale is imperative to understand the fundamental magnetism of matters and for fostering the development of new magnetic nanomaterials. Conventional microscopy methods fall short in providing the two information simultaneously. Here, we develop a new approach to simultaneously map the magnetic field and atomic structure at the nanoscale using Lorentz 4-dimensional scanning transmission electron microscopy (Ltz-4D-STEM). This method enables precise measurement of the characteristic atomic and magnetic structures across an extensive field of view, a critical aspect for investigating real-world ferromagnetic materials. It offers a comprehensive visualization and statistical evaluation of the different structural information at a pixel-by-pixel correlation. The new method allows to directly visualize the magnetoelastic coupling and the resulting complex magnetization arrangement as well as the competition between magnetoelastic and magnetostatic energy. This approach opens new avenues for in-depth studying the structure-property correlation of nanoscale magnetic materials.
Source: arXiv (Cornell University)
Institutions: Karlsruhe Institute of Technology, Technische Universität Darmstadt, Kerntechnische Entsorgung Karlsruhe (Germany), Institute of Nanotechnology, Korea University of Technology and Education, Forschungszentrum Jülich, Ernst Ruska Centre, Christian-Albrechts-Universität zu Kiel, Lanzhou University of Technology, Lanzhou University
Language: English
Subfield: Structural Biology
Domain: Life Sciences
Open Access status: green
Funder: Deutsche Forschungsgemeinschaft
Award: G448618440
OpenAlex ID: W4392827304