Electromagnetically controlled multiferroic thermal diode

TL;DR

This paper introduces an electromagnetically tunable thermal diode using multiferroic heterojunctions, enabling external control of heat flow for applications in information processing and electronic heat management.

Contribution

It presents the first demonstration of a controllable thermal diode based on multiferroic heterostructures with analytical and numerical validation.

Findings

Strong heat rectification effect observed

External electric field effectively controls heat flow

Potential applications in thermally based information processing

Abstract

We propose an electromagnetically tunable thermal diode based on a two phase multiferroics composite. Analytical and full numerical calculations for prototypical heterojunction composed of Iron on Barium titanate in the tetragonal phase demonstrate a strong heat rectification effect that can be controlled externally by a moderate electric field. This finding is of an importance for thermally based information processing and sensing and can also be integrated in (spin)electronic circuits for heat management and recycling.