# Magnetic superelasticity and inverse magnetocaloric effect in Ni-Mn-In

## TL;DR

This paper investigates Ni-Mn-In alloys, revealing their magnetic superelasticity and inverse magnetocaloric effect linked to structural phase transitions, with potential applications in magnetic cooling and smart materials.

## Contribution

It demonstrates the coexistence of magnetic superelasticity and inverse magnetocaloric effect in Ni-Mn-In alloys and explores their relationship with structural phase transitions.

## Key findings

- Magnetic field induces a martensitic to austenitic phase transition.
- The alloy exhibits strain recovery upon magnetic field removal.
- Inverse magnetocaloric effect observed in the alloy.

## Abstract

Applying a magnetic field to a ferromagnetic Ni$_{50}$Mn$_{34}$In$_{16}$ alloy in the martensitic state induces a structural phase transition to the austenitic state. This is accompanied by a strain which recovers on removing the magnetic field giving the system a magnetically superelastic character. A further property of this alloy is that it also shows the inverse magnetocaloric effect. The magnetic superelasticity and the inverse magnetocaloric effect in Ni-Mn-In and their association with the first order structural transition is studied by magnetization, strain, and neutron diffraction studies under magnetic field.