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Title: Iron nitride permanent magnet and technique for forming iron nitride permanent magnet

A permanent magnet may include a Fe16N2 phase constitution. In some examples, the permanent magnet may be formed by a technique that includes straining an iron wire or sheet comprising at least one iron crystal in a direction substantially parallel to a <001> crystal axis of the iron crystal; nitridizing the iron wire or sheet to form a nitridized iron wire or sheet; annealing the nitridized iron wire or sheet to form a Fe16N2 phase constitution in at least a portion of the nitridized iron wire or sheet; and pressing the nitridized iron wires and sheets to form bulk permanent magnet.
Issue Date:
OSTI Identifier:
1473692
Assignee:
Regents of the University of Minnesota (Minneapolis, MN) ARPA-E
Patent Number(s):
10,068,689
Application Number:
14/238,835
Contract Number:
AR0000199
Resource Relation:
Patent File Date: 2012 Aug 17
Research Org:
Regents of the University of Minnesota, Minneapolis, MN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

Other works cited in this record:

Magnetic material and production method thereof
patent, November 2001

In situ evidence of enhanced transformation kinetics in a medium carbon steel due to a high magnetic field
journal, July 2004

Projector augmented-wave method
journal, December 1994

Opportunities and challenges for a sustainable energy future
journal, August 2012
  • Chu, Steven; Majumdar, Arun
  • Nature, Vol. 488, Issue 7411, p. 294-303
  • DOI: 10.1038/nature11475

Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
journal, January 1998
  • Dudarev, S. L.; Botton, G. A.; Savrasov, S. Y.
  • Physical Review B, Vol. 57, Issue 3, p. 1505-1509
  • DOI: 10.1103/PhysRevB.57.1505

A new challenge: grain boundary engineering for advanced materials by magnetic field application
journal, October 2006
  • Watanabe, Tadao; Tsurekawa, Sadahiro; Zhao, Xiang
  • Journal of Materials Science, Vol. 41, Issue 23, p. 7747-7759
  • DOI: 10.1007/s10853-006-0740-1

Self-Consistent Equations Including Exchange and Correlation Effects
journal, November 1965

Enhanced Fe moment in nitrogen martensite and Fe16N2 (invited)
journal, November 1994
  • Wallace, W. E.; Huang, M. Q.
  • Journal of Applied Physics, Vol. 76, Issue 10, p. 6648-6652
  • DOI: 10.1063/1.358158

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