Premium
Sol‐gel processed highly (100)‐textured (K, Na)NbO 3 ‐based lead‐free thin films: Effect of pyrolysis temperature
Author(s) -
Zhang SuWei,
Luo Jin,
Zhou Zhen,
Li JingFeng
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16149
Subject(s) - materials science , microstructure , thin film , crystallization , pyrolysis , ferroelectricity , potassium niobate , piezoelectricity , natural bond orbital , sol gel , chemical engineering , texture (cosmology) , composite material , mineralogy , nanotechnology , optoelectronics , dielectric , chemistry , density functional theory , computational chemistry , engineering , image (mathematics) , artificial intelligence , computer science
Recently, lead‐free piezoelectric thin films have received increasing attention due to the growing demands for mircoelectromechanical systems and the significant progress in lead‐free piezoelectric research. Here, potassium sodium niobate [(K, Na)NbO 3 ( KNN )]‐based thin films were fabricated via a sol‐gel method. The effects of pyrolysis temperature on the resulting microstructure and electrical properties of KNN ‐based films were investigated. The KNN ‐based film pyrolyzed at 550°C and annealed at 700°C shows a dominant (100) orientation with a high texturing degree of 91.7%. The microstructures, morphologies, piezo‐ and ferroelectric properties of the KNN ‐based films were discussed in association with different pyrolysis temperatures. The crystallization mechanism of the (100) textured KNN ‐based thin films was elaborated in detail.