1. Quantum origin of magnetism
1.1 Magnetic moment
The magnetism of atoms results from the movement of electrons, which induce an orbital magnetic moment, associated with their revolution around the nucleus, and a spin magnetic moment, associated with their rotation on themselves. . The total magnetic moment is the vector combination of orbital and spin moments. The order of magnitude of the atomic magnetic moment is the Bohr magneton, defined by :
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Quantum origin of magnetism
Ferromagnetism of nanostructures
Bibliography
Events
Condensed Matter Day, Grenoble, August 27-31, 2018
( https://jmc2018.sciencesconf.org )
Colloque Louis Néel, May 14-17, 2019, Toulouse
( https://www.sciencesconf.org/browse/conference/?confid=5388...
Patents
More than 4,500 patents exist on MRAMs, including the following:
High speed magneto-resistive random access memory, J.C. Wu, H.L. Stadler, R.R. Katti, US5173873 (1992) ;
Magnetic memory with a thermally assisted writing procedure, J.P. Nozières, I.L.Prejbeanu, TW200937415 (2009) ;
Magnetic memory device, C. Heide,...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
A number of French manufacturers use nanoscale magnetic materials. These include :
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Crocus Technology (magnetic sensors, MRAMs),
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Hprobe (development...
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