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
Functional materials - Bio-based materials
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
