Magnetic and magnetoelastic properties of melt-spun Ni-Mn-Ga

Magnetic and magnetoelastic properties of melt-spun Ni-Mn-Ga

We have fabricated single roller melt-spun ribbons of the ferromagnetic shape memory alloy NiMnGa. The ribbons' magnetic and magnetoelastic responses and corresponding microstructure in the as-spun and annealed states were analyzed by a combination of vibrating sample magnetometry, X-ray diffra...

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Veröffentlicht in:IEEE transactions on magnetics 2006-01, Vol.42 (1), p.78-80
Hauptverfasser: Dearing, N., Jenner, A.G.
Format: Artikel
Sprache:eng
Schlagworte:
Annealing
Capacitance
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Ferromagnetic shape memory
Ferromagnetism
Magnetic analysis
Magnetic field induced strain
Magnetic properties
Magnetism
Materials science
Melt spinning
melt spun
Microstructure
Nickel
NiMnGa
Optical diffraction
Optical microscopy
Other topics in materials science
Physics
Ribbons
Shape memory alloys
Strain
Transformations
X-ray diffraction
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Beschreibung
Zusammenfassung:We have fabricated single roller melt-spun ribbons of the ferromagnetic shape memory alloy NiMnGa. The ribbons' magnetic and magnetoelastic responses and corresponding microstructure in the as-spun and annealed states were analyzed by a combination of vibrating sample magnetometry, X-ray diffraction, differential scanning calorimetery, capacitance dilatometry, and optical microscopy. The transformation strain in the annealed ribbons showed a dependence on the applied field of 600 ppm, whereas the as-spun samples did not display any field-induced strain.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2005.860204