Enhanced Electromechanical Properties of 0.65Bi1.05FeO3–0.35BaTiO3 Ceramics through Optimizing Sintering Conditions

Tauseef Ahmed; Salman Ali Khan; Fazli Akram; Jihee Bae; Soo Yong Choi; Ali Hussain; Tae Kwon Song; Yeon Soo Sung; Myong Ho Kim; Soonil Lee

doi:10.1002/pssa.201900970

Enhanced Electromechanical Properties of 0.65Bi_1.05FeO₃–0.35BaTiO₃ Ceramics through Optimizing Sintering Conditions

Tauseef Ahmed
, Salman Ali Khan
, Fazli Akram
, Jihee Bae
, Soo Yong Choi
, Ali Hussain
, Tae Kwon Song
, Yeon Soo Sung
, Myong Ho Kim^*
, Soonil Lee^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Lead-free piezoelectric 0.65Bi_1.05FeO₃–0.35BaTiO₃ (BF–35BT) ceramics are synthesized via conventional solid-state reaction by varying sintering dwell time (t_s). The crystalline phase, microstructures, and piezoelectric properties of BF–35BT are evaluated at room temperature. BF–35BT ceramics with improved electrical properties in a narrow range of t_s are obtained. Enhanced electromechanical properties are obtained in ceramics sintered at 1000 °C for 3 h. X-ray diffraction reveals a single perovskite structure with pseudocubic symmetry. A prominent enhancement in remanent polarization (P_r) and coercive field (E_c) is obtained. Typical ferroelectric behaviors are obtained, whereas unipolar and bipolar strains are enhanced with increasing t_s. The static piezoelectric constants (d₃₃) = 187 pC N⁻¹, whereas dynamic piezoelectric constants (d^*₃₃) = 387 pm V⁻¹ at a field of 5 kV mm⁻¹ with Curie temperature (T_C) = 422 °C.

Original language	English
Article number	1900970
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	217
Issue number	12
DOIs	https://doi.org/10.1002/pssa.201900970
State	Published - 1 Jun 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

bismuth ferrite-barium titanate (BiFeO–BTO)
dielectric properties
lead free piezoelectrics
sintering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1002/pssa.201900970

Cite this

Ahmed, T., Khan, S. A., Akram, F., Bae, J., Choi, S. Y., Hussain, A., Song, T. K., Sung, Y. S., Kim, M. H., & Lee, S. (2020). Enhanced Electromechanical Properties of 0.65Bi_1.05FeO₃–0.35BaTiO₃ Ceramics through Optimizing Sintering Conditions. Physica Status Solidi (A) Applications and Materials Science, 217(12), Article 1900970. https://doi.org/10.1002/pssa.201900970

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title = "Enhanced Electromechanical Properties of 0.65Bi1.05FeO3–0.35BaTiO3 Ceramics through Optimizing Sintering Conditions",

abstract = "Lead-free piezoelectric 0.65Bi1.05FeO3–0.35BaTiO3 (BF–35BT) ceramics are synthesized via conventional solid-state reaction by varying sintering dwell time (ts). The crystalline phase, microstructures, and piezoelectric properties of BF–35BT are evaluated at room temperature. BF–35BT ceramics with improved electrical properties in a narrow range of ts are obtained. Enhanced electromechanical properties are obtained in ceramics sintered at 1000 °C for 3 h. X-ray diffraction reveals a single perovskite structure with pseudocubic symmetry. A prominent enhancement in remanent polarization (Pr) and coercive field (Ec) is obtained. Typical ferroelectric behaviors are obtained, whereas unipolar and bipolar strains are enhanced with increasing ts. The static piezoelectric constants (d33) = 187 pC N−1, whereas dynamic piezoelectric constants (d*33) = 387 pm V−1 at a field of 5 kV mm−1 with Curie temperature (TC) = 422 °C.",

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AU - Bae, Jihee

AU - Choi, Soo Yong

AU - Hussain, Ali

AU - Song, Tae Kwon

AU - Sung, Yeon Soo

AU - Kim, Myong Ho

AU - Lee, Soonil

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AB - Lead-free piezoelectric 0.65Bi1.05FeO3–0.35BaTiO3 (BF–35BT) ceramics are synthesized via conventional solid-state reaction by varying sintering dwell time (ts). The crystalline phase, microstructures, and piezoelectric properties of BF–35BT are evaluated at room temperature. BF–35BT ceramics with improved electrical properties in a narrow range of ts are obtained. Enhanced electromechanical properties are obtained in ceramics sintered at 1000 °C for 3 h. X-ray diffraction reveals a single perovskite structure with pseudocubic symmetry. A prominent enhancement in remanent polarization (Pr) and coercive field (Ec) is obtained. Typical ferroelectric behaviors are obtained, whereas unipolar and bipolar strains are enhanced with increasing ts. The static piezoelectric constants (d33) = 187 pC N−1, whereas dynamic piezoelectric constants (d*33) = 387 pm V−1 at a field of 5 kV mm−1 with Curie temperature (TC) = 422 °C.

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