Correlation between Thermal Properties, Electrical Conductivity and Crystal Structure in the BaCe0.80Y0.20O2.9 Proton Conductor

TL;DR

This study investigates how the crystal structure, thermal properties, and electrical conductivity of BaCe0.80Y0.20O2.9 change with temperature, revealing a transition from monoclinic to cubic structure and correlating these changes.

Contribution

It provides detailed neutron diffraction data on structural evolution of BaCe0.80Y0.20O2.9 at high temperatures and correlates it with thermal and conductivity measurements.

Findings

Structural transition from monoclinic to cubic at 800°C

Correlation between crystal structure and conductivity

Thermal properties linked to structural changes

Abstract

In this paper we report an extensive neutron diffraction investigation at high temperature on the BaCe0.80Y0.20O2.9 proton conducting material. Our results precisely define the structural evolution of the compound as a function of temperature which is from a monoclinic (room temperature) to a cubic (800C) structure. Neutron data have been correlated to calorimetric measurements (TGA and DSC) and conductivity properties of the material.