Magnetization in small components can now be filmed in the laboratory

phys.org | 9/12/2018 | Staff
samtetley (Posted by) Level 3
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Current electronic storage technology may be superseded in the future by devices based on tiny magnetic structures. These individual magnetic regions correspond to bits; they need to be as small as possible and capable of rapid switching. In order to better understand the underlying physics and to optimize the components, various techniques can be used to visualize the magnetization behavior.

Scientists at Johannes Gutenberg University Mainz (JGU) in Germany have now refined an electron microscope-based technique to capture static images of these components and to film the high-speed switching processes. They have also employed a specialized signal processing technology that suppresses image noise. "This provides us with an excellent opportunity to investigate magnetization in small devices," Daniel Schönke of the JGU Institute of Physics explained. The research was carried out in cooperation with Surface Concept GmbH and the results have been published in the journal Review of Scientific Instruments.

Electron - Microscopy - Polarization - Analysis - Technique

Scanning electron microscopy with polarization analysis is a lab-based technique for imaging magnetic structures. Compared with optical methods, it has the advantage of high spatial resolution. The main disadvantage is the time it...
(Excerpt) Read more at: phys.org
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