Articles you may be interested inThe magnetic phase transition in Mn1.1Fe0.9P1−xGex magnetocaloric alloys J. Appl. Phys. 117, 063909 (2015); 10.1063/1.4906568Magnetic and magnetocaloric properties of La0.85(Na1−xKx)0.15MnO3 ceramics produced by reactive spark plasma sintering Structure evolution and entropy change of temperature and magnetic field induced magneto-structural transition in Mn1.1Fe0.9P0.76Ge0.24

The high-energy ball-milling method was used for fabricating Ni 50 Mn 36.7 In 13.3 fine-sized particles. The as-melt polycrystalline Ni 50 Mn 36.7 In 13.3 alloy exhibits a 14 M modulated martensite structure at room temperature (RT). The atomic pair distribution function analysis together with the differential scanning calorimetry technique proved that the 14 M modulated martensite transformed to a metastable amorphous-like structure after ball milling for 8 hours. Annealing of the ball-milled particles with the amorphous-like phase first led to the crystallization to form a B2 structure at 523 K (250°C), and then an ordered Heusler L2 1 structure (with a small tetragonal distortion) at 684 K (411°C). The annealed particles undergo different structural transitions during cooling, tailored by the atomic arrangements of the high-temperature phase. Low-field thermomagnetization measurements show that the ball-milled particles with the amorphous-like structure or the atomically disordered crystalline structure exhibit a magnetic transition from the paramagnetic-like to the spin-glass state with decreasing temperature, whereas the crystalline particles with the ordered Heusler L2 1 structure present a ferromagnetic behavior with the Curie temperature T c % 310 K (37°C).