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

Caron, L., Dutta, B., Devi, P., Ghorbani-Zavareh, M., Hickel, T., Cabassi, R., et al. (2017). Effect of Pt substitution on the magnetocrystalline anisotropy of Ni2MnGa: A competition between chemistry and elasticity. Physical Review B, 96(5): 054105, pp. 1-6. doi:10.1103/PhysRevB.96.054105.

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 Creators:
Caron, Luana1, Author           
Dutta, Biswanath2, Author           
Devi, Parul1, Author           
Ghorbani-Zavareh, Mahdiyeh1, Author           
Hickel, Tilmann2, Author           
Cabassi, Riccardo3, Author           
Bolzoni, Fulvio3, Author           
Fabbrici, Simone3, Author           
Albertini, Franca3, Author           
Felser, Claudia4, Author           
Singh, Sanjay1, Author           
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Computational Phase Studies, Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863341              
3C.N.R.-I.M.E.M. Institute, Parco Area delle Scienze, 37A, Fontanini-Parma, Italy, persistent22              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: The magnetocrystalline anisotropy (MAE) of Ni2- x Pt-x MnGa(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.

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Language(s): eng - English
 Dates: 2017-08-07
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 96 (5) Sequence Number: 054105 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008