TY - JOUR
T1 - Dielectric and piezoelectric properties in the BiScO3-PbTiO 3-PbO·SnO2 ternary system
AU - Song, Tae Ho
AU - Eitel, Richard E.
AU - Shrout, Thomas R.
AU - Randall, Clive A.
PY - 2004/8
Y1 - 2004/8
N2 - The effect of Sn substitution on the dielectric and piezoelectric properties of BiScO3-PbTiO3 was investigated in the ternary system, (1 - x){(1 - y)BiScO3-yPbO·SnO 2}-xPbTiO3 (x = 0.43-0.63, y = 0.25-0.75). The ferroelectric phase transition temperature near morphotropic phase boundary (MPB) decreased with increasing Sn content from 450°C (x, y = 0.64, 0) down to ∼250°C for the composition with x, y = 0.46, 0.75. Piezoelectric activity (d33 = 460-465 and kp = 0.54) in Sn-substituted MPBs remained at similar levels to the pure 0.46BiScO3-0.64PbTiO 3 MPB, with Sn content of up to y = 0.5. However, further Sn-additions lead to decreased electromechanical performance and the formation of secondary phases such as SnO2. Broad temperature dependence of the permittivity near the ferroelectric phase transition was assessed by a diffuseness parameter δ, which generally decreased with firing temperature in the range of 1050-1250°C. The temperature of the permittivity maximum (Tmax) increased with measuring frequency, a characteristic consistent with relaxor ferroelectric materials.
AB - The effect of Sn substitution on the dielectric and piezoelectric properties of BiScO3-PbTiO3 was investigated in the ternary system, (1 - x){(1 - y)BiScO3-yPbO·SnO 2}-xPbTiO3 (x = 0.43-0.63, y = 0.25-0.75). The ferroelectric phase transition temperature near morphotropic phase boundary (MPB) decreased with increasing Sn content from 450°C (x, y = 0.64, 0) down to ∼250°C for the composition with x, y = 0.46, 0.75. Piezoelectric activity (d33 = 460-465 and kp = 0.54) in Sn-substituted MPBs remained at similar levels to the pure 0.46BiScO3-0.64PbTiO 3 MPB, with Sn content of up to y = 0.5. However, further Sn-additions lead to decreased electromechanical performance and the formation of secondary phases such as SnO2. Broad temperature dependence of the permittivity near the ferroelectric phase transition was assessed by a diffuseness parameter δ, which generally decreased with firing temperature in the range of 1050-1250°C. The temperature of the permittivity maximum (Tmax) increased with measuring frequency, a characteristic consistent with relaxor ferroelectric materials.
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U2 - 10.1143/JJAP.43.5392
DO - 10.1143/JJAP.43.5392
M3 - Article
AN - SCOPUS:6344278424
SN - 0021-4922
VL - 43
SP - 5392
EP - 5397
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
IS - 8 A
ER -