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Temperature and magnetic-field dependence of the elastic constants of Ni-Mn-Al magnetic Heusler alloy
Moya Raposo, Xavier; Mañosa, Lluís; Planes Vila, Antoni; Krenke, Thorsten; Acet, Mehmet; Morin, Michel; Zarestky, Jerel L.; Lograsso, T. A.
Universitat de Barcelona
We report on measurements of the adiabatic second-order elastic constants of the off-stoichiometric Ni54Mn23Al23 single-crystalline Heusler alloy. The variation in the temperature dependence of the elastic constants has been investigated across the magnetic transition and over a broad temperature range. Anomalies in the temperature behavior of the elastic constants have been found in the vicinity of the magnetic phase transition. Measurements under applied magnetic field, both isothermal and variable temperature, show that the value of the elastic constants depends on magnetic order, thus giving evidence for magnetoelastic coupling in this alloy system.
2010-05-04
Elasticitat
Transformacions de fase (Física estadística)
Aliatges
Elasticity
Transformacions martensítiques
Alloys
(c) The American Physical Society, 2006
Article
The American Physical Society
         

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