Prediction of the new efficient permanent magnet SmCoNiFe3
Abstract
We propose a new efficient permanent magnet, SmCoNiFe3, which is a development of the well-known SmCo5 prototype. More modern neodymium magnets of the Nd-Fe-B type have an advantage over SmCo5 because of their greater maximum energy products due to their iron-rich stoichiometry. Our new magnet, however, removes most of this disadvantage of SmCo5 while preserving its superior high-temperature efficiency over the neodymium magnets. We show by means of first-principles electronic-structure calculations that SmCoNiFe3 has very favorable magnetic properties and could therefore potentially replace SmCo5 or Nd-Fe-B types in various applications.
- Publication:
-
Physical Review B
- Pub Date:
- September 2017
- DOI:
- 10.1103/PhysRevB.96.100404
- arXiv:
- arXiv:1708.08957
- Bibcode:
- 2017PhRvB..96j0404S
- Keywords:
-
- Condensed Matter - Materials Science
- E-Print:
- doi:10.1103/PhysRevB.96.100404