Controlling Twin Variant Configuration in a Constrained Ni–Mn–Ga Sample Using Local Magnetic Fields

Document Type


Publication Date



Traditionally, a uniform magnetic field is applied to a bulk sample of Ni–Mn–Ga. In this study, it is shown that local twinning can be created at a specific location with the use of a focused magnetic field in a constrained Ni–Mn–Ga sample. Image processing indicates that the twin volume fraction remains consistent throughout the process. Magnetic flux modelling illustrates the focused magnetic field as it permeates through the sample before and after the local twinning.