Journal
PHYSICAL REVIEW B
Volume 96, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.96.100404
Keywords
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Funding
- VR
- eSSENCE
- KAW Foundation [2012.0031, 2013.0020]
- US DOE by LLNL [DE-AC52-07NA27344]
- Critical Materials Institute
- Energy Innovation Hub - US DOE, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office
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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.
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