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Title of article :
In situ high-energy X-ray studies of magnetic-field-induced phase transition in a ferromagnetic shape memory Ni–Co–Mn–In alloy Original Research Article
Author/Authors :
Y.D. Wang، نويسنده , , E.W. Huang، نويسنده , , Y. Ren، نويسنده , , Z.H. Nie، نويسنده , , G. Wang، نويسنده , , Y.D. Liu، نويسنده , , J.N. Deng، نويسنده , , T. H. Choo، نويسنده , , P.K. Liaw، نويسنده , , D.E. Brown، نويسنده , , L. ZUO، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2008
Pages :
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Abstract :
The magnetic-field-induced phase transition behavior in a Ni45Co5Mn36.6In13.4 alloy, with and without an imposed stress, at various temperatures has been studied in situ by high-energy synchrotron X-ray diffraction. The crystallographic structure and microstructural characteristics in response to multiple external parameters (stress, temperature and magnetic fields) are traced, enabling the reversible and irreversible magnetic-field-induced transformations to be understood. The transformation kinetics as a function of temperature and magnetic field is determined by monitoring the changes of the specified diffraction peaks, which may be accurately described by the Clausius–Clapeyron relation. The X-ray absorption topographic measurements give direct evidence that inhomogeneous deformation occurred during magnetic-field-induced transformation in the polycrystalline materials. These investigations provide the fundamental structural information and functional characteristics that is crucial for the potential applications of this sort of new functional material.
Keywords :
Martensitic transformation , Ferromagnetic shape memory alloy , High-energy X-ray diffraction
Journal title :
ACTA Materialia
Serial Year :
Link To Document :