Advances in Magnetic Alloys
A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Entropic Alloys and Meta-Metals".
Deadline for manuscript submissions: 30 June 2024 | Viewed by 2900
Special Issue Editor
Special Issue Information
Dear Colleagues,
A magnetic alloy is a combination of different metals that contains, but are not limited to, at least one of the three main magnetic elements: iron (Fe), nickel (Ni), or cobalt (Co), etc. The strongest magnetic element is iron, which allows items made out of these alloys to attract to magnets
Magnetic alloys have become common in our life, especially in the form of steel (containing iron and carbon), alnico (containing iron, nickel, cobalt, and aluminum), permalloy (iron and nickel), ferrites (such as MeOAl2O3 or A3B5O12 where cation Me could be Mn, Fe, Co, Ni or Zn, in spinel-ferrites or Ba, Sr, Pb in hexagonal ferrites) or special materials based on rare-earth elements.
Based on magnetisation type the magnetic alloys can be divided in two categories:
1) Soft magnetic materials—characterized by a very narrow hysteresis cycle (coercivity below about 103 A m−1) and, therefore, by the ease with which they can be magnetized, even in weak magnetic fields.
2) Hard magnetic materials—characterized by a wide hysteresis cycle (coercivity above about 104 A m−1), a high remanence and a high energy product (maximum volume of energy density that the magnet can provide externally as an independent source).
In particular, there is a more recently defined class of magnetic materials called semi-hard magnetic materials, dedicated to magnetic recording media. The hysteresis cycle of these materials is quite wide, but slightly narrower than that of permanent magnets.
Magnetic materials are an integral part of more and more electromagnetic devices with technical applications in various civil and military fields.
Dr. Gabriel Ababei
Guest Editor
Manuscript Submission Information
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Keywords
- low field magnetic sensors
- electromagnetic shielding
- permanent magnets
- microstructure
