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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1141Effect of Temperature/Pressure on Lattice Dynamics...

Effect of Temperature/Pressure on Lattice Dynamics of FeNi

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Abstract:

Tetratenite phase of L1₀ (CuAu) FeNi is identified as a hard ferromagnet in spite of that common FeNi alloys are classified as a soft magnet. Due to its strong magnetic anisotropy and large coercivity, tetrataenite phase of L1₀ FeNi is under investigation as a rare earth free advanced permanent magnet. Our computed equilibrium lattice constant and c/a ratio for tetratenite phase of L1₀ (CuAu) FeNi are in 10 % deviation with the other available results. The vibrational and electronic properties of L1₀ FeNi at finite temperatures/pressures are studied using the first-principles plane wave self-consistent method under the framework of density functional theory. Conclusions based on the phonon dispersion curves, phonon density of states and electronic band structure along with total and projected density of states at finite temperatures/pressures are outlined.

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Periodical:

Advanced Materials Research (Volume 1141)

Pages:

84-90

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1141.84

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Online since:

August 2016

Authors:

N.Y. Pandya*, A.D. Mevada, P.N. Gajjar

Keywords:

Electronic Band Structure, L1₀ FeNi, Phonon Dispersion, Tetrataenite

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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