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Measurement of magnetic Fields with nm-scale resolution in a TEM.

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Start date : 1 March 2019

offer n° PsD-DRT-19-0058

In this project we will develop new methods of characterising magnetic fields with a view to act as an accelerator for the development of Spin Transfer Torque (STT) magnetic random access memories (MRAM) and future magnetic devices at LETI. Off-axis electron holography will be developed for the mapping of magnetic fields following the improvements in the technique implemented during the ERC project « Holoview ». As properties such as the thermal stability and magnetic switching characteristics are key to the success of these devices, methods to visualise the evolution of the magnetic fields in-situ in a transmission electron microscopy (TEM) will be developed. Different types of STT MRAM devices will be examined in the project including devices grown on Ta posts for ultra high density applications and perpendicular shape anisotropy which provides a gateway towards magnetic devices with diameters as low as 4 nm.

  • Keywords : Ultra-divided matter, Physical sciences for materials, DTSI, Leti
  • Laboratory : DTSI / Leti
  • CEA code : PsD-DRT-19-0058
  • Contact : david.cooper@cea.fr
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