Affiliation:
1. MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Guangxi Universities Key Laboratory of Non‐ferrous Metal Oxide Electronic Functional Materials and Devices College of Materials Science and Engineering Guilin University of Technology Guilin 541004 China
Abstract
Series of Ca2+ ion‐doped high‐entropy [(La0.25Nd0.25Sm0.25Eu0.25)1−xCax]2Zr2O7−δ (x = 0.025, 0.05, 0.075, 0.1, and 0.2) materials are prepared through a traditional solid‐state reaction method. The solubility of Ca is revealed to be x = 0.075, which is higher than that in the cases with single lanthanide on the A‐site of A2Zr2O7‐based pyrochlore materials. The study of electrical properties discloses that the conductivities of [(La0.25Nd0.25Sm0.25Eu0.25)1−xCax]2Zr2O7−δ increased with Ca‐doping level and dominated by oxide ion conduction, without noticeable proton conduction. Good chemical stability is revealed for these materials under a wet CO2 atmosphere.
Funder
National Natural Science Foundation of China
Subject
Materials Chemistry,Electrical and Electronic Engineering,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics,Electronic, Optical and Magnetic Materials