- Magnetic shape memory alloys (MSMA) such as Ni2MnGa possess a unique material property that allows them to strain up to 10% in an applied magnetic field.
- Strain is achieved through the magnetic-field-induced motion of twin boundaries.
- The highest reported strains have been found in single crystal MSMA but they are difficult and costly to produce.
- Polycrystalline materials are easier and more cost-efficient to produce than single crystals.
- Single crystals can be “cut out” from a polycrystalline material if individual grains are large enough.
- Very large grains may be formed via abnormal grain growth.
Dr. Peter Müllner