Achieving high energy density/efficiency in light-metal-element-rich relaxor ferroelectric ceramics by annihilating volatile Schottky defects
Kunjie Lou, Yizheng Bao, Jun Chai, Jiyue Wu, Yanshuang Hao, Shaozheng Zhang, Genshui Wang
Abstract
Different types of defects were designed in K 2 La 0.75 Gd 0.25 Nb 5 O 15 and the mechanism of point defects was revealed by the experiment and DFT caculation. A high W rec of 5.02 J cm −3 and η of 85.6% were achieved at the lowest level of defect content.
Topics & Concepts
Materials scienceCeramicMetalFerroelectricitySchottky diodeFerroelectric ceramicsCrystallographic defectEnergy densityOptoelectronicsCondensed matter physicsMetallurgyEngineering physicsPhysicsDielectricDiodeFerroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis