Piezoelectric Properties in the Perovskite BiScO3-PbTiO 3-(Ba,Sr)TiO3 Ternary System

Tae Ho Song; Richard E. Eitel; Thomas R. Shrout; Clive A. Randall; Wes Hackenberger

doi:10.1143/jjap.42.5181

Piezoelectric Properties in the Perovskite BiScO₃-PbTiO ₃-(Ba,Sr)TiO₃ Ternary System

Tae Ho Song, Richard E. Eitel, Thomas R. Shrout, Clive A. Randall, Wes Hackenberger

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Abstract

A new ternary system (1 - x)BiScO_3-x{(1-y)PbTiO_3-y (Ba_0.294Sr_0.706)TiO₃} was studied in relation to morphotropic phase boundaries (MPB). Analogous to modified PZT ceramics, barium and strontium were introduced to the recently developed MPB (1 - x)BiScO_3-xPbTiO₃ for x > 0.60, in order to investigate Curie temperature and piezoelectric property variations. With increasing barium and strontium substitution up to y = 0.3, the MPB line moved from x = 0.64 to 0.70 and d₃₃ and k_p gradually decreased. X-ray diffraction phase analysis correlated the variations in piezoelectric properties showing a maximum in the compositions near rhombohedral-tetragonal phase boundary. Grain sizes were around 2 μm for all compositions and tetragonality decreased with the downward shifting of T_c in the range of 216-371°C. The frequency dependence of dielectric properties about the Curie maximum shows a dispersion in both ε′ and tan δ. This relaxation behavior becomes more pronounced with increasing (Ba,Sr)TiO ₃ content, and high Curie maximum temperatures T_max's are found compared to lead based perovskites with complex B-sites.

Original language	English (US)
Pages (from-to)	5181-5184
Number of pages	4
Journal	Japanese Journal of Applied Physics
Volume	42
Issue number	8
DOIs	https://doi.org/10.1143/jjap.42.5181
State	Published - Aug 2003

All Science Journal Classification (ASJC) codes

General Engineering
General Physics and Astronomy

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title = "Piezoelectric Properties in the Perovskite BiScO3-PbTiO 3-(Ba,Sr)TiO3 Ternary System",

abstract = "A new ternary system (1 - x)BiScO3-x{(1-y)PbTiO3-y (Ba0.294Sr0.706)TiO3} was studied in relation to morphotropic phase boundaries (MPB). Analogous to modified PZT ceramics, barium and strontium were introduced to the recently developed MPB (1 - x)BiScO3-xPbTiO3 for x > 0.60, in order to investigate Curie temperature and piezoelectric property variations. With increasing barium and strontium substitution up to y = 0.3, the MPB line moved from x = 0.64 to 0.70 and d33 and kp gradually decreased. X-ray diffraction phase analysis correlated the variations in piezoelectric properties showing a maximum in the compositions near rhombohedral-tetragonal phase boundary. Grain sizes were around 2 μm for all compositions and tetragonality decreased with the downward shifting of Tc in the range of 216-371°C. The frequency dependence of dielectric properties about the Curie maximum shows a dispersion in both ε′ and tan δ. This relaxation behavior becomes more pronounced with increasing (Ba,Sr)TiO 3 content, and high Curie maximum temperatures Tmax's are found compared to lead based perovskites with complex B-sites.",

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AU - Randall, Clive A.

AU - Hackenberger, Wes

PY - 2003/8

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AB - A new ternary system (1 - x)BiScO3-x{(1-y)PbTiO3-y (Ba0.294Sr0.706)TiO3} was studied in relation to morphotropic phase boundaries (MPB). Analogous to modified PZT ceramics, barium and strontium were introduced to the recently developed MPB (1 - x)BiScO3-xPbTiO3 for x > 0.60, in order to investigate Curie temperature and piezoelectric property variations. With increasing barium and strontium substitution up to y = 0.3, the MPB line moved from x = 0.64 to 0.70 and d33 and kp gradually decreased. X-ray diffraction phase analysis correlated the variations in piezoelectric properties showing a maximum in the compositions near rhombohedral-tetragonal phase boundary. Grain sizes were around 2 μm for all compositions and tetragonality decreased with the downward shifting of Tc in the range of 216-371°C. The frequency dependence of dielectric properties about the Curie maximum shows a dispersion in both ε′ and tan δ. This relaxation behavior becomes more pronounced with increasing (Ba,Sr)TiO 3 content, and high Curie maximum temperatures Tmax's are found compared to lead based perovskites with complex B-sites.

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Piezoelectric Properties in the Perovskite BiScO₃-PbTiO ₃-(Ba,Sr)TiO₃ Ternary System

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