Room temperature reversible colossal volto-magnetic effect in all-oxide metallicmagnet/topotactic-phase-transition material heterostructures

TL;DR

This paper reports a room-temperature, reversible colossal volto-magnetic effect in all-oxide heterostructures, achieved through electric-field-induced topotactic phase transitions that significantly modulate magnetization for low-power spintronic devices.

Contribution

It introduces a novel approach to control magnetism via electric-field-driven topotactic phase transitions in heterostructures, enabling large magnetization changes at room temperature.

Findings

Gigantic 100-250% magnetization change induced by 2-3 V voltage.

Reversible and room-temperature volto-magnetic effect demonstrated.

Potential for low-power spintronic and memory applications.

Abstract

Multiferroic materials have undergone extensive research in the past two decades in an effort to produce a sizable room-temperature magneto-electric (ME) effect in either exclusive or composite materials for use in a variety of electronic or spintronic devices. These studies have looked into the ME effect by switching the electric polarization by the magnetic field or switching the magnetism by the electric field. Here, an innovative way is developed to knot the functional properties based on the tremendous modulation of electronics and magnetization by the electric field of the topotactic phase transitions (TPT) in heterostructures composed of metallic-magnet/TPT-material. It is divulged that application of a nominal potential difference of 2-3 Volts induces gigantic changes in magnetization by 100-250% leading to colossal Voltomagnetic effect, which would be tremendously beneficial for low-power consumption applications in spintronics. Switching electronics and magnetism by inducing TPT through applying an electric field requires much less energy, making such TPT-based systems promising for energy-efficient memory and logic applications as well as opening a plethora of tremendous opportunities for applications in different domains.