Compositionally tunable high temperature Mn-doped BiFeO3–BaTiO3 lead-free piezoceramics.

Autor:	Wu, Shukang, Zhu, Zhe, Yao, Zhonghua, Hao, Hua, Cao, Minghe, Liu, Hanxing
Předmět:	LEAD-free ceramics HIGH temperatures PIEZOELECTRIC ceramics CURIE temperature THERMAL stability
Zdroj:	Journal of Materials Science: Materials in Electronics; Jan2023, Vol. 34 Issue 1, p1-9, 9p
Abstrakt:	The requisite for piezoelectric ceramics, which can offer increased sensitivity in harsh environment, is to own high Curie temperature. Here, lead-free 0.75BiFe0.94(Zn1/2Ti1/2)0.06O3-0.25BaTiO3-xmol%MnO2 (BFZT-BT-M) ceramics were selected to develop a novel high temperature piezoelectric composition. Doping of Mn markedly improved comprehensive piezoelectric properties of BFZT-BT-M ceramics at x = 0.25 with the maximum piezoelectric constant d33 of 118 pC/N and high Curie temperature of 503 °C, respectively. The thermal depolarization stability is up to 400 °C. Favorable electrical properties combined with high Curie temperature make the BFZT-BT-M ceramics suitable for high temperature applications. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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