Abstract:An
easy approach is suggested to obtain excellent piezoelectric
performances in potassium sodium niobate (KNN)-based ceramics simultaneously
with low dielectric loss (tanδ), high Curie temperature (T
C), and electromechanical coupling factor (k
p). Herein, a KNN-based ceramics system with
nonstoichiometric Nb5+ is designed. Excessive Nb5+ occupying the B-site significantly influences the microstructural
features and electrical properties of KNN-based ceramics. Furthermore,
the excessive Nb5+ improves the tempe… Show more
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