Abstract
The structure of ferroelectric 0.06LiNbO3-0.94K0.5Na0.5NbO3 (KNNL6) was investigated by the neutron total scattering method in the temperature range of 290–773 K. The Rietveld analysis using the powder neutron diffraction data in the range of 290–773 K indicates transition from a two-phase (monoclinic and tetragonal) mixture at room temperature to tetragonal and cubic phases at higher temperatures. However, characterization of the local structure by the pair distribution function (PDF) method indicates that the local structure (r ≲ 10 Å) stays monoclinic over the same temperature range. Besides, the local oxygen octahedral distortion exhibits smaller changes with temperature than what is observed for the long-range average structure.
Funder
Research Grants Council, University Grants Committee
City University of Hong Kong
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering
Reference41 articles.
1. Ferroelectric Devices;Uchino,2000
2. Ferroelectric Materials for Energy Harvesting and Storage,2020
3. Perovskite lead-free dielectrics for energy storage applications
4. Next-generation electrocaloric and pyroelectric materials for solid-state electrothermal energy interconversion
5. Ferroelectricity—A revolutionary century of discovery;Brennecka;Am. Ceram. Soc. Bull.,2020
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献