Français
3. Ferromagnetic applications
3.1 Permanent magnets – Magnetic circuits
Two main types of ferromagnetic materials can be distinguished: hard ferromagnetics and soft ferromagnetics. Hard ferromagnets have very open hysteresis cycles, with a strong coercive field and high remanence. Soft ferromagnets, on the other hand, have a shallow hysteresis cycle with a low coercive field.
The applications of these two types of ferromagnetic materials are very different . Soft ferromagnetic materials are used in magnetic circuits. They guide magnetic field lines in transformers or electromagnets,...
The Ultimate Scientific and Technical Reference
This article is included in
Nanosciences and nanotechnologies
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Ferromagnetic applications
Using ferromagnets for spintronics
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 :
-
Crocus Technology (magnetic sensors, MRAMs),
-
Hprobe (development...
The Ultimate Scientific and Technical Reference
