Abstract

We report thermal transport in polycrystalline improper ferroelectric ErMnO3, showing that thermal conductivity decreases with decreasing domain size and that ferroelectric domain walls can overrule grain-boundary effects. By varying cooling rate and sintering conditions, the study tunes grain and domain sizes and measures thermal diffusivity and thermal conductivity over temperature, along with crystallographic and microstructural characterization.

Abstract

We report thermal transport in polycrystalline improper ferroelectric ErMnO3, showing that thermal conductivity decreases with decreasing domain size and that ferroelectric domain walls can overrule grain-boundary effects. By varying cooling rate and sintering conditions, the study tunes grain and domain sizes and measures thermal diffusivity and thermal conductivity over temperature, along with crystallographic and microstructural characterization.

Abstract

We report thermal transport in polycrystalline improper ferroelectric ErMnO3, showing that thermal conductivity decreases with decreasing domain size and that ferroelectric domain walls can overrule grain-boundary effects. By varying cooling rate and sintering conditions, the study tunes grain and domain sizes and measures thermal diffusivity and thermal conductivity over temperature, along with crystallographic and microstructural characterization.

Abstract

We report thermal transport in polycrystalline improper ferroelectric ErMnO3, showing that thermal conductivity decreases with decreasing domain size and that ferroelectric domain walls can overrule grain-boundary effects. By varying cooling rate and sintering conditions, the study tunes grain and domain sizes and measures thermal diffusivity and thermal conductivity over temperature, along with crystallographic and microstructural characterization.