Grain size induced monoclinic (Cm) to rhombohedral (R3c) transformation in sodium potassium bismuth titanate ceramics

Babu, M. Veera Gajendra; Bagyalakshmi, B.; Padiyan, D. Pathinettam; Ren, Yang; Sundarakannan, B.

doi:10.1016/j.scriptamat.2017.07.022

Cited by 11 publications

(1 citation statement)

References 22 publications

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“…The observed well saturated loop depict typical ferroelectric behavior. In the present study, the measured "E C " value of 30 kV/cm which is lowest compared to the reported literature [20] [21] and "P r " value of 37 μC/cm 2 is comparable to those prepared by conventional solid-state sintering method [18]. The reduced "E C " could be attributed to the smaller grain size due to the substitution of K + which in turn reduces the domain width and enables the easy mobility of ferroelectric domains [22].…”

Section: Resultscontrasting

confidence: 78%

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na0.4K0.1Bi0.5TiO3 Ceramics for Actuator Applications

Sowmya¹,

Varade²,

Venkataramani³

et al. 2019

AMPC

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In this work, lead-free Na 0.4 Bi 0.5 TiO 3 -K 0.1 Bi 0.5 TiO 3 (NKBT) piezoelectric ceramics were prepared by the solid-state reaction method and their structural, ferroelectric and dielectric properties were systematically studied. NKBT sintered at 1150˚C for 4 h exhibited highly dense (96% -98% of the theoretical density) and uniform grains of size 1.1 μm. The coexistence of tetragonal (P4bm) and rhombohedral (R3c) phases due to the presence of morphotrophic phase boundary for the chosen composition has been confirmed by the Rietveld refinement studies. Enhanced ferroelectric properties such as remnant polarization (P r ) and coercive field (E C ) are found to be 37 μC/cm 2 and 30 kV/cm, respectively. The optimized synthesis procedure for NKBT ceramics resulted in enhanced strain (%) and converse piezoelectric coefficient (d 33 * ) of 0.3 % and 554 pm/V which is attributed to smaller grain size and switching of non 180˚ domains. NKBT ceramics with such excellent piezoelectric properties can be considered as a promising candidate for actuator applications.

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Section: Resultscontrasting

confidence: 78%

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na0.4K0.1Bi0.5TiO3 Ceramics for Actuator Applications

Sowmya¹,

Varade²,

Venkataramani³

et al. 2019

AMPC

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Effect of A-site off-stoichiometry on the microstructural, structural, and electromechanical properties of lead-free tetragonal 0.80Na0.5Bi0.5TiO3–0.20BaTiO3 (NBT–20BT) piezoceramic

Mishra

Abebe

Jafo

et al. 2021

J Mater Sci: Mater Electron

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Effect of sintering temperature on the structural disorder and its influence on electromechanical properties of the morphotropic phase boundary composition 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-6BT)

Mishra

Khatua

Adhikary

et al. 2021

J Mater Sci: Mater Electron

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Grain size induced monoclinic (Cm) to rhombohedral (R3c) transformation in sodium potassium bismuth titanate ceramics

Cited by 11 publications

References 22 publications

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na<sub>0.4</sub>K<sub>0.1</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> Ceramics for Actuator Applications

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na<sub>0.4</sub>K<sub>0.1</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> Ceramics for Actuator Applications

Effect of A-site off-stoichiometry on the microstructural, structural, and electromechanical properties of lead-free tetragonal 0.80Na0.5Bi0.5TiO3–0.20BaTiO3 (NBT–20BT) piezoceramic

Effect of sintering temperature on the structural disorder and its influence on electromechanical properties of the morphotropic phase boundary composition 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-6BT)

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Grain size induced monoclinic (Cm) to rhombohedral (R3c) transformation in sodium potassium bismuth titanate ceramics

Cited by 11 publications

References 22 publications

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na&lt;sub&gt;0.4&lt;/sub&gt;K&lt;sub&gt;0.1&lt;/sub&gt;Bi&lt;sub&gt;0.5&lt;/sub&gt;TiO&lt;sub&gt;3&lt;/sub&gt; Ceramics for Actuator Applications

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na&lt;sub&gt;0.4&lt;/sub&gt;K&lt;sub&gt;0.1&lt;/sub&gt;Bi&lt;sub&gt;0.5&lt;/sub&gt;TiO&lt;sub&gt;3&lt;/sub&gt; Ceramics for Actuator Applications

Effect of A-site off-stoichiometry on the microstructural, structural, and electromechanical properties of lead-free tetragonal 0.80Na0.5Bi0.5TiO3–0.20BaTiO3 (NBT–20BT) piezoceramic

Effect of sintering temperature on the structural disorder and its influence on electromechanical properties of the morphotropic phase boundary composition 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (NBT-6BT)

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Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na<sub>0.4</sub>K<sub>0.1</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> Ceramics for Actuator Applications

Enhanced Ferroelectric and Converse Piezoelectric Properties of Dense Lead-Free Na<sub>0.4</sub>K<sub>0.1</sub>Bi<sub>0.5</sub>TiO<sub>3</sub> Ceramics for Actuator Applications