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4. Using ferromagnets for spintronics
The classical way of manipulating the magnetization of a ferromagnetic system is based on the application of an external magnetic field combined with temperature variation. More recently, the interaction between a spin-polarized electric current (composed of electrons with different numbers of upward and downward spins) and magnetization has proved equally effective in controlling the magnetic state. On the one hand, magnetization acts on conduction electrons with a direct impact on the system's resistance; these are the magnetoresistance phenomena
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Using ferromagnets for spintronics
Conclusion
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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