MILF – An ANR project

MILF stands for Magnetic Imaging at Low dimensions & high Frequencies. It is a 36-month-long early-carrier ANR project. Magnetic events such as domain reversal, domain wall propagation and vortex oscillations are fast processes, broad source of spintronic applications. However, it remains extremely challenging to scrutinize the inner structure of such magnetic objects during their motion, while it is of fundamental importance for the comprehension of their current limitations.

The objective of MILF is to combine the nanometer scale resolution of electron microscopy, to the nanosecond resolution necessary to observe dynamically micromagnetic objects. This will be sought by developing a fully electrostatic stroboscopic (pump-probe) magnetic imaging TEM technique, that could be used on a broad range of commercial microscopes. This will be achieved by the design of model samples taking place in dedicated chipsets that will carry, in a single device, the sample and its pumping design. The finale objective is spintronics devices studied in operando. MILF eventually aims at drawing an as-exhaustive-as-possible landscape of existing time-resolved magnetic imaging techniques in terms of magnetic sensitivity and spatio-temporal capacities.

SPINTEC is in charge of model sample and devices nanofabrication, as well as high-frequency electronic design ; CEMES brings its electron optic expertise for ultrafast blanking (probe), and TEM sample environment (pump); Institut Néel brings its know-how on electron microscope elements fabrication and electronic synchronization.

Local contact at SPINTEC: Aurélien Masseboeuf

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