Size Effects on Magnetic Actuation in Ni‐Mn‐Ga Shape‐Memory Alloys
Abstract
The off-stoichiometric Ni(2)MnGa Heusler alloy is a magnetic shape-memory alloy capable of reversible magnetic-field-induced strains (MFIS). These are generated by twin boundaries moving under the influence of an internal stress produced by a magnetic field through the magnetocrystalline anisotropy. While MFIS are very large (up to 10%) for monocrystalline Ni-Mn-Ga, they are near zero (<0.01%) in fine-grained polycrystals due to...
Paper Details
Title
Size Effects on Magnetic Actuation in Ni‐Mn‐Ga Shape‐Memory Alloys
Published Date
Oct 19, 2010
Journal
Volume
23
Issue
2
Pages
216 - 232
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