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Colloquium
Towards three-dimensional characterisation of magnetic moments inside individual nanocrystals in the TEM
Wednesday, 16 May 2018, 16:30-18:00
KIT, Campus Nord
Institute of Nanotechnology
Bldg. 640 Seminar room 0-167
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Institute of Nanotechnology
Bldg. 640 Seminar room 0-167
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Talk given by
Prof. Dr. Rafal E. Dunin-Borkowski Director, Institute for Microstructure Research Director, Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Peter Gruenberg Institute Research Centre Juelich Juelich, Germany
Abstract:
Transmission electron microscopy (TEM) has been revolutionised in recent years, both by the introduction of new hardware such as field-emission electron guns, aberration correctors and in situ stages and by the development of new techniques, algorithms and software that take advantage of increased computational speed and the ability to control and automate modern electron microscopes. In this talk, I will describe how the specialised TEM technique of electron holography, in combination with a model-based approach for the reconstruction of magnetization distributions from electron optical phase images, can be used to image the magnetic properties of materials with close-to-atomic spatial resolution, both in projection and in three dimensions. I will present results obtained from individual magnetic nanocrystals, as well as from magnetic skyrmions in extended films and geometrically- confined structures fabricated using focused ion beam milling. I will also provide an overview of other TEM-based research in the Ernst Ruska-Centre in Jülich and conclude with a personal perspective on directions for the future development of transmission electron microscopy.
This event is part of the eventgroup INT Talks
Homepage
https://www.int.kit.edu/events.php
https://www.int.kit.edu/events.php
Organizer
Prof. Dr. Manfred Kappes
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Mail: manfred kappes ∂ kit edu
Prof. Dr. Manfred Kappes
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Mail: manfred kappes ∂ kit edu
Targetgroup
Interested / Everyone
Interested / Everyone