The martensite structure in the Ni1.96Mn1.18Ga0.86 magnetic shape memory single crystal was determined to be 5R monoclinic at room temperature. The twin structure of the martensite was found to be a result of the coexistence of 3 twin types. The crystallography of macro- and internal twins in the studied 5R martensite was determined by using X-ray diffraction methods.

Crystal Structure and Twinning in Martensite of Ni1.96Mn1.18Ga0.86 Magnetic Shape Memory Alloy. G.Mogylnyy, I.Glavatskyy, N.Glavatska, O.Söderberg, Y.Ge, V.K.Lindroos: Scripta Materialia, 2003, 48[10], 1427-32