Figure 4. Calculated martensite structures of Ni2MnGa. (a) Unperturbed tetragonal martensite
unit cell, (b) and its 1×1×5 supercell. (c) 5M modulated martensite structure, 55Mn nuclei contributing
to the dublet indicated by blue and yellow rectangles (magnetic moments are directed
perpendicularly to the screen and are not shown). (d) Six modulated martensite structures with
Mn↔Ga antisite pair indicated by the blue arrow. Red arrow emphasizes the antiparallel orientation
of MnGa with respect to MnMn.