Biomedical Engineering Reference
In-Depth Information
Figure 8.4
High-temperature austenite structure of NiMnGa and its low-
temperature tetragonal variants of martensite with visible
easy magnetization axis [16].
The inluence of the external magnetic ield on a structure
forces the material to behave similarly as a ferromagnetic, and it
responds by the mechanism of magnetic domain wall motion and
magnetization vector rotation. The uniqueness of MSMA mechanism
is the result of the magnetic ield and the martensite variant
reorientation behavior.
Figure 8.5
Magnetization process of NiMnGa sample with visible
microscale wall domain reorientation for circumstances
review in text [16].
