Synthesis and characterization of MnO2 added (Na0.475K0.475Li0.05)(Nb0.9Ta0.05Sb0.05)O3 lead-free piezoelectric ceramics

Min, Jae; Lee, Jeong Woo; Bae, Byeonghoon; Jeong, Yong Jeong; Yoon, Chang‐Bun

doi:10.1007/s43207-020-00042-z

Cited by 5 publications

(1 citation statement)

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“…In addition, the grain size effect has also been found to have a great influence on the piezoelectric properties [17][18][19][20][21][22]. For example, La and Mn can solve the problem of uneven grain size and excessive leakage current in KNN-based ceramics [23,24]. Doping with Bi 2 O 3 can reduce the grain size and inhibit the leakage current [25,26].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Electric Properties of Bi2O3-Doped (K0.5Na0.5)NbO3 Lead-Free Ceramics

Wang

et al. 2022

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In this paper, Bi2O3-doped (K0.5Na0.5)NbO3 (x = 0.1, 0.2, 0.3, 0.4) lead-free ceramics are prepared by a conventional solid-state reaction and analyzed by studying the structure, ferroelectric, and piezoelectric properties. It is found that the doping of Bi2O3 increases the proportion of the trigonal phase in KNN ceramics, thus enabling the construction of KNN ceramics with an orthogonal–trigonal phase boundary at room temperature. At the same time, doping with Bi2O3 can reduce the grain size and improve grain size uniformity of the ceramics. The KNN-0.1%Bi2O3 ceramic has the best piezoelectric properties in all composition; the results are as follows: d33 = 121pC/N, kp = 0.474, kt = 0.306.

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