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Magnetic properties of Co2C and Co3C nanoparticles and their assemblies

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8 Author(s)
Carroll, Kyler J. ; Department of Chemistry, Virginia Commonwealth University, Richmond, Virginia 23284, USA ; Huba, Zachary J. ; Spurgeon, Steven R. ; Qian, Meichun
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Nano-composite material consisting of Co2C and Co3C nanoparticles has recently been shown to exhibit unusually large coercivities and energy products. Experimental studies that can delineate the properties of individual phases have been undertaken and provide information on how the coercivities and the energy product change with the size and composition of the nanoparticles. The studies indicate that while both phases are magnetic, the Co3C has higher magnetization and coercivity compared to Co2C. Through first principles electronic structure studies using a GGA+U functional, we provide insight on the role of C intercalation on enhancing the magnetic anisotropy of the individual phases.

Published in:

Applied Physics Letters  (Volume:101 ,  Issue: 1 )

Date of Publication:

Jul 2012

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