Magnetic properties of disordered Ni3C

Lanping Yue, R. Sabiryanov, E. M. Kirkpatrick, Diandra L. Leslie-Pelecky

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The metastable Ni3C phase has been produced by mechanically alloying Ni and C. Ni3C particles of diameter 10 nm are produced after 90 h of mechanical alloying with no evidence of crystalline Ni in x ray or electron diffraction. Linear muffin-tin orbital band-structure calculations show that Ni3C is not expected to be ferromagnetic due to strong Ni-C hybridization in the ordered alloy; however, the introduction of even small amounts of disorder produces locally Ni-rich regions that can sustain magnetism. Mechanically alloyed Ni3C is ferromagnetic, with a room-temperature coercivity of 70 Oe and a magnetization of 0.8 emu/g at 5.5 T, although the hysteresis loop is not saturated. The theoretical prediction that interacting locally nickel-rich regions may be responsible for ferromagnetic behavior is supported by the observation of magnetically glassy behavior at low magnetic fields.

Original languageEnglish (US)
Pages (from-to)8969-8975
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number13
DOIs
StatePublished - Oct 1 2000

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Metastable phases
Tin
Mechanical alloying
Magnetism
Hysteresis loops
Coercive force
Nickel
Alloying
Electron diffraction
Band structure
alloying
Magnetization
Magnetic properties
Magnetic fields
magnetic properties
Crystalline materials
X rays
coercivity
tin
x ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magnetic properties of disordered Ni3C. / Yue, Lanping; Sabiryanov, R.; Kirkpatrick, E. M.; Leslie-Pelecky, Diandra L.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 62, No. 13, 01.10.2000, p. 8969-8975.

Research output: Contribution to journalArticle

Yue, Lanping ; Sabiryanov, R. ; Kirkpatrick, E. M. ; Leslie-Pelecky, Diandra L. / Magnetic properties of disordered Ni3C. In: Physical Review B - Condensed Matter and Materials Physics. 2000 ; Vol. 62, No. 13. pp. 8969-8975.
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