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Applied Physics Letters / Volume 98 / Issue 15 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 98, 152502 (2011); http://dx.doi.org/10.1063/1.3578190 (3 pages)

Engineering of magnetostriction in Fe3Pt1−xIrx by controlling the Ir concentration

Dorj Odkhuu1, Won Seok Yun1, S. H. Rhim1,2, and Soon Cheol Hong1

1Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea
2Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA

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(Received 25 February 2011; accepted 21 March 2011; published online 11 April 2011)

A tremendous change in both the sign and magnitude of magnetostriction (λ001) in Fe3Pt1−xIrx (x = 0–1.0) was discovered through a first-principles study using the highly precise full-potential linearized augmented plane wave method. The obtained λ001 values span a wide range from −1050 (x = 0) to +2670 ppm (x = 0.25), a significantly large enhancement over the λ001 values attained for Galfenol, a widely investigated material. Further analysis confirmed that this large effect originates mainly from the nonmagnetic Ir and Pt with induced moments, of which the 5d orbital has larger spin–orbit coupling than the 3d orbital of Fe.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

ab initio calculations, APW calculations, iridium alloys, iron alloys, magnetic moments, magnetostriction, platinum alloys, spin-orbit interactions

PACS

  • 75.80.+q

    Magnetomechanical effects, magnetostriction

  • 75.30.Cr

    Saturation moments and magnetic susceptibilities

  • 71.70.Ej

    Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3578190

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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