Electromechanical properties and dielectric behavior of (Bi1/2Na1/2)(1−1.5x)BixTiO3 lead-free piezoelectric ceramics

Wang, X.X.; Kwok, Kin Wing; Tang, Xin‐Gui; Chan, Helen Lai Wa; Choy, C. L.

doi:10.1016/j.ssc.2003.10.017

Cited by 76 publications

(46 citation statements)

References 13 publications

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“…4 indicates another phenomenon that the dielectric constant increase sharply at low frequency and high temperature after (Sb 1/2 Nb 1/2 ) 4+ was added. This phenomenon is consistent with previous results [12] and has been explained by Tu et al in term of superparaelectric clusters existing in the tetragonal phase of the BNT ceramics [13][14][15]. According to superparaelectric model [16,17], superparaelectric clusters are the microregions of nano-size and the size of superparaelectric clusters and related potentials are assumed to be temperature dependent.…”

Section: Resultssupporting

confidence: 92%

Piezoelectric properties and dielectric behavior of Bi1/2Na1/2[Ti1−x (Sb1/2Nb1/2) x ]O3 lead-free piezoelectric ceramics

Zhou

Liu

2007

J Electroceram

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New lead-free piezoelectric ceramics of ABO 3 perovskite type, Bi 1/2 Na 1/2 [Ti 1−x (Sb 1/2 Nb 1/2 ) x ]O 3 , were synthesized by conventional solid state reaction. The effect of the replacement of complex ions of (Sb 1/2 Nb 1/2 ) 4+ in the B cationic site on structural and electrical properties was investigated. The XRD analysis showed that all samples exhibited a single phase of perovskite structure. Piezoelectric and dielectric measurement revealed that the substitution of (Sb 1/2 Nb 1/2 ) 4+ ions lead to an increase in piezoelectric constant(d 33 ), electromechanical coupling factor(k t ), relative dielectric constant(ɛ r ),and loss tangent (tanδ), while excess of (Nb 1/2 Sb 1/2 ) 4+ ions results in a decrease in d 33 , k t , ɛ r , but an increase in tanδ. Temperature dependence of dielectric constant ɛ r measurement indicated these compounds were relaxor ferroelectric. At low frequency and high temperature, dielectric constant increased sharply attributed to the superparaelectric clusters after (Sb 1/2 Nb 1/2 ) 4+ ions substitution.

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Section: Resultssupporting

confidence: 92%

Piezoelectric properties and dielectric behavior of Bi1/2Na1/2[Ti1−x (Sb1/2Nb1/2) x ]O3 lead-free piezoelectric ceramics

Zhou

Liu

2007

J Electroceram

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“…On the other hand, perovskite ceramics seem to be suitable for actuator and high-power applications due to their relatively high piezoelectricity. Perovskite-type leadfree piezoelectric ceramics have been mainly investigated using KNbO 3 -based, 2-5 K, NaNbO 3 -based [6][7][8][9][10][11][12][13] and Bi, NaTiO 3 -based [14][15][16][17][18][19][20][21][22] ceramics. Bi, NaTiO 3 -based ceramics exhibit a transition from a ferroelectric phase to an antiferroelectric phase at temperatures around 200c C, and their piezoelectricity disappears above these temperatures.…”

Section: Introductionmentioning

confidence: 99%

Grain Size and Piezoelectric Properties of (Ba, K, Na)NbO3 Lead-Free Ceramics

新二郎

啓介

2006

J. Ceram. Soc. Japan

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“…In this way, niobates (K,Na)NbO 3 (KNN)-based ceramics have showed good piezoelectric and electric properties, high Curie temperature and environmental innocuity (Maeder et al 2004;Wang et al 2004;Alkoy and Papila 2010). Also, when the ratio of K/Na reaches 50/50, the piezoelectric coefficient reaches the highest point (up to 80 pC/N) (Ringgaard and Wurlitzer 2005).…”

Section: Introductionmentioning

confidence: 99%

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

et al. 2011

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Abstract. Microstructure, electrical properties and dielectric behaviour of K 1/2 Na 1/2 NbO 3 (KNN) and CaTiO 3 -modified K 1/2 Na 1/2 NbO 3 (CTO-KNN) systems, were investigated. Discs doped with 0 to 0·55% mol of CaTiO 3 (CTO) were sintered at 1125 • C for 2 h. Although minority phases were found in doped samples, CaTiO 3 was not detected. It was also observed that CTO changed the microstructure and grain size of KNN drastically. Also, the Curie temperature and permittivity values decreased. Addition of CTO between 0·15 and 0·45 mol% decreases the density and dielectric values. Samples prepared with higher content of CTO than 0·45 mol% showed better electrical properties.

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Electromechanical properties and dielectric behavior of (Bi1/2Na1/2)(1−1.5x)BixTiO3 lead-free piezoelectric ceramics

Cited by 76 publications

References 13 publications

Piezoelectric properties and dielectric behavior of Bi1/2Na1/2[Ti1−x (Sb1/2Nb1/2) x ]O3 lead-free piezoelectric ceramics

Piezoelectric properties and dielectric behavior of Bi1/2Na1/2[Ti1−x (Sb1/2Nb1/2) x ]O3 lead-free piezoelectric ceramics

Grain Size and Piezoelectric Properties of (Ba, K, Na)NbO3 Lead-Free Ceramics

Electrical and microstructural properties of CaTiO 3 -doped K 1/2 Na 1/2 NbO 3 -lead free ceramics

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