Room temperature magneto-structural transition in Al for Sn substituted Ni–Mn–Sn melt spun ribbons

Microstructure, Martensitic Transformation, and Inverse Magnetocaloric Effect in Ni48Mn39.5Sn12.5−xAlx Metamagnetic Shape Memory Alloys

“…One should however mention that small contribution of the austenite phase to this sample (at the level of few mass %) cannot be also totally excluded. The martensite structure in the studied bulk alloys is the same as the martensite structure observed in melt spun ribbons of the same composition [27]. It must be remarked that no additional phases could be fitted to the obtained RT XRD patterns.…”

“…Nonetheless relatively less attention has so far been directed to the analysis of phase homogeneity of bulk Ni-Mn-Sn-Al alloys and its impact on functional properties, which is particularly relevant given metastability and phase decomposition of heat treated Ni-Mn-Sn alloys [24,25]. In previous letters the current authors discussed the influence of Sn replacement with Al on structure and magnetocaloric properties in Ni 48 Mn 39.5 Sn 12.5 alloys produced by melt spinning technique [26][27][28], which offers significant advantages over conventional metallurgy originating in microstructure refinement, enhanced chemical homogeneity, and extended solid solubility. This becomes ever more important when considering newly developed multicomponent Ni-Mn-based systems [29].…”

Wheel speed-dependent martensitic transformation and magnetocaloric effect in Ni–Co–Mn–Sn ferromagnetic shape memory alloy ribbons

“…Aside from the bulk, the ribbon samples of these NiMn-based FSMAs have also attracted increasing attention because rapid quenching by melt spinning is an effective method to synthesize highly textured polycrystalline samples, which can reduce or even avoid the prolonged annealing process [23][24][25][26][27][28][29][30][31][32][33][34]. Ribbons are appropriate MCE materials in practical applications because they can improve the technical characteristics of a refrigeration unit by optimizing the heat transfer between the working body and heat exchange [31].…”

Shape effect in FMR of Ni-Co-Mn-In layers obtained by pulsed laser deposition

“…The addition of Co and change of composition influence on the martensitic transformation and Curie temperature. [10][11][12]. In the Ni 50-x Co x Mn 25+y In 25-y alloys with the 5 at.% of Co (x = 5) a T C A (Curie temperature in austenite phase) temperature was shifted to 343 K [10].…”