Lead‐Free Piezoceramics.

Abstract

O 3 polycrystals exhibit piezoelectric properties comparable to those of lead zirconium titanate ceramics which are high-performance piezoelectric materials. The properties of the Pb-free piezoelectric ceramic are due to the existence of a morphotropic phase boundary in the alkaline niobate-based perovskite solid solution. It is expected that the new material is a leading candidate for environmentally friendly piezoelectric devices. -(SAITO, Y.; TAKAO, H.; TANI, T.; NONOYAMA, T.; TAKATORI, K.; HOMMA, T.; NAGAYA, T.; NAKAMURA, M.; Nature (London, UK) 432 (2004) 7013, 84-87; Toyota Cent. Res. Dev. Lab., Nagakute, Aichi 480-11, Japan; Eng.) -W. Pewestorf 03-016

Effect of Sr and Ba-doping in optical and electrical properties of KNN based transparent ceramics

“…However, owing to the toxicity of lead [8], the use of lead-contained ceramics has been restricted. Therefore, the research on lead-free ceramics has received intense attentions in recent years.…”

Dramatic Influence of A-Site Nonstoichiometry on the Electrical Conductivity and Conduction Mechanisms in the Perovskite Oxide Na0.5Bi0.5TiO3

“…The toxicity of lead has raised environmental concerns for many years and consequently has led to extensive studies on developing lead-free piezoelectric materials over the past decade. [1][2][3][4] The perovskite oxide Na 0.5 Bi 0.5 TiO 3 (NBT) is one of the favoured candidates to replace PZT and various solid solutions with other ferroelectric materials such as BaTiO 3 and K 1-x Na x NbO 3 have been studied both for piezoelectric and high temperature capacitor (dielectric) applications. [5][6][7][8][9][10][11][12][13][14][15][16][17] NBT has a complex crystal structure.…”

Energy Harvesting for Biosensors Using Biofriendly Materials

“…Several kinds of non -lead -based materials have been reported: the BaTiO 3 ( BT ) system [11] , the Na 0.5 K 0.5 NbO 3 ( NKN ) sodium potassium niobate system [11,12] , the (BiNa)TiO 3 system [13,14] , bismuth -layered structural ferroelectrics [15,16] , the langasite system [17] , and BiMeO 3 (Me = Sc, Fe, In, etc.) [18,19] .…”