Magnetic properties of Co2C and Co3C nanoparticles and their assemblies

Authors

Kyler J. Carroll, Virginia Commonwealth University, University of California
Zachary J. Huba, Virginia Commonwealth University
Steven R. Spurgeon, Drexel University
Meichun Qian, Virginia Commonwealth UniversityFollow
Shiv N. Khanna, Virginia Commonwealth UniversityFollow
Daniel M. Hudgins, Virginia Commonwealth UniversityFollow
Mitra L. Taheri, Drexel University
Everett E. Carpenter, Virginia Commonwealth UniversityFollow

Document Type

Article

Original Publication Date

2012

Journal/Book/Conference Title

Applied Physics Letters

Volume

101

Issue

1

DOI of Original Publication

10.1063/1.4733321

Comments

Originally published at http://dx.doi.org/10.1063/1.4733321

Date of Submission

March 2015

Abstract

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.

Rights

Carroll, K.J., Huba, Z.J., Spurgeon, S.R., et al. Magnetic properties of Co2C and Co3C nanoparticles and their assemblies. Applied Physics Letters, 101, 012409 (2012). Copyright © 2012 AIP Publishing LLC.

Is Part Of

VCU Chemistry Publications