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Ferromagnetic resonance in Ni-Mn-Ga thin films and thin-film tubes

  • J. DubowikEmail author
  • I. Gościańska
  • Y. Kudryavtsev
Article

Abstract.

We report on FMR experiments performed for the first time on thin Ni-Mn-Ga films clamped to the mica substrates and then fully released from them. The aim is to evaluate the role of magnetoelastic coupling in stressed Ni-Mn-Ga Heusler alloy films that undergo martensitic transformation. The experimental results show that the difference in the effective magnetization 4π(Meff tubes-Meff films) is negligible in the austenite phase and it increases to about 1–1.5 kG at temperatures well below the martensitic transformation. The data suggests that magnetoelastic coupling in the martensite phase of Ni-Mn-Ga thin films is typical of normal thin magnetic films with magnetostriction of about 50 ppm.

Keywords

Martensitic Transformation European Physical Journal Special Topic Martensite Phase Austenite Phase Magnetocrystalline Anisotropy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  1. 1.Institute of Molecular PhysicsPoznańPoland
  2. 2.Department of PhysicsA. Mickiewicz UniversityPoznańPoland
  3. 3.Institute of Metal PhysicsKievUkraine

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