Effects of magnetic field and hydrostatic pressure on the martensitic transformation temperature of Ni–Mn–Ga ferromagnetic shape memory alloys

Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region

“…Hydrostatic pressure affects the transformation temperature, too. Kim et al [20] demonstrated a linear increase in the phase transformation temperature by 3-13 K/GPa, depending on the martensitic structure involved in the transformation. Also aging effects have been reported to influence the martensitic transformation [21].…”

Anomalous effects of repeated martensitic transitions on the transport, magnetic and thermal properties in Ni–Co–Mn–Sb Heusler alloy

“…Owing to this martensitic transition, a large shape memory effect [10,11], giant magnetocaloric effect [12][13][14][15] and large magnetoresistance [16,17] have been observed in these alloys. The martensitic transition can be tuned by application of field and by chemical or hydrostatic pressure [18][19][20]. In a recent work it was observed that, under appropriate conditions, the high field austenite phase gets arrested, resulting in a large irreversibility in the field dependence of magnetization, resistivity and heat capacity [21].…”

The effect of external pressure on the magnetocaloric effect of Ni–Mn–In alloy

“…It is known that the magnetic properties of the Heusler alloys depend on the external pressure [20][21][22]. It has also been reported that the austenite (AST)-martensite (MST) phase transition temperature in the Ni-Mn-Ga [23], Ni-Mn-Sn [24] and Ni-Mn-In [25] Heusler alloys shifts with external pressure. There exists a literature reporting the effect of pressure on the MCE in Ni-Mn-Ga [26,27] and the Co doped Ni-Mn-Sb alloys [28].…”