Metastability and magnetic memory effect in Ni-Mn-Sn alloy

Abstract

Magneto-structural instability in the ferromagnetic shape memory alloy of composition Ni${}_2$Mn${}_{1.4}$Sn${}_{0.6}$ is investigated by transport and magnetic measurements. Large negative magnetoresistance is observed around the martensitic transition temperature (90-210 K). Both magnetization and magnetoresistance data indicate that upon the application of an external magnetic field at a constant temperature, the sample attains a field-induced arrested state which persists even when the field is withdrawn. We observe an intriguing behavior of the arrested state that it can remember the last highest field it has experienced. The field-induced structural transition plays the key role for the observed anomaly and the observed irreversibility can be accounted by the Landau-type free energy model for the first order phase transition.

References in corpus (5)

• Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn alloys
• Hysteresis and hierarchies: dynamics of disorder-driven first-order phase transformations
• Magnetic superelasticity and inverse magnetocaloric effect in Ni-Mn-In
• Disorder-Driven Pretransitional Tweed in Martensitic Transformations
• Field-Induced Magnetization Steps in Intermetallic Compounds and Manganese Oxides: The Martensitic Scenario

Cited by in corpus (5)

• Reentrant spin glass state in Mn doped Ni2MnSn shape memory alloy
• Magnetic memory effect in ensembles of interacting anisotropic magnetic nanoparticles
• Relating field-induced shift in transition temperature to the kinetics of coexisting phases in magnetic shape memory alloys
• Magnetic states of Ni-Mn-Sn based shape memory alloy: a combined muon spin relaxation and neutron diffraction study
• Magnetic phase diagram of the austenitic Mn-rich Ni-Mn-(In,Sn) Heusler alloys