DocumentCode
1197923
Title
Acoustic Assisted Magnetic Field Induced Strain in 5M Ni-Mn-Ga Polycrystals
Author
Gaitzsch, Uwe ; Techapiesancharoenkij, Ratchatee ; Pötschke, Martin ; Roth, Stefan ; Schultz, Ludwig
Author_Institution
Leibniz-IFW Dresden, Dresden
Volume
45
Issue
4
fYear
2009
fDate
4/1/2009 12:00:00 AM
Firstpage
1919
Lastpage
1921
Abstract
Magnetic shape memory alloys can be deformed in an external magnetic field by twin boundary motion. By coupling in acoustic energy the strain can be enhanced significantly, especially if the twinning stress is just above the magnetically achievable stress level. Two percent of strain can be achieved in a polycrystalline material, which showed only 0.3% strain without acoustic assistance.
Keywords
gallium alloys; magnetoacoustic effects; magnetomechanical effects; manganese alloys; nickel alloys; shape memory effects; twin boundaries; twinning; NiMnGa; acoustic energy; crystalline material; magnetic field induced strain; magnetic shape memory alloys; twin boundary motion; twinning stress; Acoustic energy; magnetic shape memory alloys; magnetomechanical effects;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2008.2011278
Filename
4802354
Link To Document