[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5370/KIEE.2010.59.11.2021

Piezoelectric Properties of lead free (Na_0.44K_0.52)Nb_0.84O₃-Li_0.04(Sb_0.06Ta_0.1)O₃ Ceramics with ZnO Addition

Lee, Dong-Hyun (광운대 전자정보대 전자재료공학과)
Lee, Seung-Hwan (광운대 전자정보대 전자재료공학과)
Nam, Sun-Pill (경상대 공대 세라믹공학과)
Lee, Young-Hie (광운대 전자재료공학과)

Publication Information

The Transactions of The Korean Institute of Electrical Engineers / v.59, no.11, 2010 , pp. 2021-2025 More about this Journal

Abstract

Electrical and structural properties were investigated on the effects of ZnO and the lead-free NKN-LST ceramics with the addition of ZnO were fabricated by a conventional mixed oxide method. A gradual change in the crystal and microstructure was observed with the increase of ZnO addition. For the NKN-LST-ZnO ceramics sintered at $1050^{\circ}C$ , bulk density increased with the addition of ZnO and showed maximum value at addition 2.0mol% of ZnO. Curie temperature of the NKN-LST-ZnO ceramics slightly decreased with adding ZnO. The dielectric constant, piezoelectric constant ( $d_{33}$ ) and electromechanical coupling factor ( $k_p$ ) increased at the small amount of ZnO addition, which might be due to the increase in density. The high piezoelectric properties = 153 pC/N, electromechanical coupling factor = 0.484 and dielectric constant = 2883 were obtained for the NKN-LST+0.5ZnO ceramics sintered at $1050^{\circ}C$ for 2h.

Keywords

Piezoelectric properties; Lead-free; ZnO addition; Dielectric properties;

Citations & Related Records

Times Cited By KSCI : 2 (Citation Analysis)
Times Cited By SCOPUS : 1

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