Unexpected magnetism explained in Cu/Cu2O-rGO nanocomposite

TL;DR

This paper explains the unexpected room temperature ferromagnetism in a Cu/Cu2O-rGO nanocomposite using a phenomenological model based on the 3D Ising model, attributing it to Cu vacancies at the interface.

Contribution

It introduces a phenomenological explanation for room temperature ferromagnetism in Cu/Cu2O-rGO nanocomposites based on interface vacancies and spin interactions.

Findings

Room temperature ferromagnetism observed in the nanocomposite.

Phenomenological model explains magnetic behavior.

Cu vacancies at the interface induce spins leading to ferromagnetism.

Abstract

The observation of room temperature ferromagnetism along with a low temperature paramagnetic counterpart in undoped Cu-Cu2O-rGO nanocomposite was demonstrated. A phenomenological approach was taken to explain the observations based on 3D Ising model for arbitrary spins generated due to Cu vacancy in the Cu2O system preferably at the interface.