Effect of Pt substitution on the magnetocrystalline anisotropy of Ni2MnGa: A competition between chemistry and elasticity

Caron L, Dutta B, Devi P, Zavareh MG, Hickel T, Cabassi R, Bolzoni F, Fabbrici S, Albertini F, Felser C, Singh S (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Physical Review B American Physical Society

Book Volume: 96

Article Number: 054105

Journal Issue: 5

DOI: 10.1103/PhysRevB.96.054105

Abstract

The magnetocrystalline anisotropy (MAE) of Ni2-xPtxMnGa(0≤x≤0.25) alloys are investigated using the singular point detection technique and density functional theory. A slight reduction in MAE as compared to that of Ni2MnGa is observed due to Pt substitution. The calculated MAE varies almost linearly with the orbital moment anisotropy. A competition between the elastic and the chemical contributions explains the observed trend of the MAE with increasing Pt content. The large MAE in combination with the previously reported increase of the martensitic transition temperature makes these alloys promising candidates for ferromagnetic shape memory applications near room temperature.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Max-Planck-Institut für Eisenforschung GmbH (MPIE) / Max Planck Institute for Iron Research DE Germany (DE) Consiglio Nazionale delle Ricerche (CNR) / National Research Council of Italy IT Italy (IT)

How to cite

APA:

Caron, L., Dutta, B., Devi, P., Zavareh, M.G., Hickel, T., Cabassi, R.,... Singh, S. (2017). Effect of Pt substitution on the magnetocrystalline anisotropy of Ni2MnGa: A competition between chemistry and elasticity. Physical Review B, 96(5). https://doi.org/10.1103/PhysRevB.96.054105

MLA:

Caron, Luana, et al. "Effect of Pt substitution on the magnetocrystalline anisotropy of Ni2MnGa: A competition between chemistry and elasticity." Physical Review B 96.5 (2017).

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