Abstract
K0.5Na0.5NbO3-LiSbO3-BiMnO3 (KNN-LS-BM) lead-free piezoelectric ceramics were prepared by the traditional ceramic processing. The “soft” and “hard” doping characteristics of the ceramics were studied by the impedance-frequency spectrum method. Results show that the single 0.4at.% BM-doping KNN ceramics show “hard” characteristics because the top shape of profile θ-f the ceramics is almost rectangular, while the single LS-doping KNN ceramics shows “soft” characteristics because of the top shape of round. The LS and BM co-doping make KNN ceramics to show “soft” and “hard” doping characteristics at the same time. Because the soft doping of LS in KNN is more preponderant than that of BM, the co-doping KNN ceramics show “soft” doping characteristics as a whole.
Published Version
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