Fatigue endurance enhancement of Sn-doped Pb(Lu1/2Nb1/2)O3–PbTiO3 ceramics

Wang, Chenxi; He, Chao; Wang, Zujian; Li, Xiuzhi; Yang, Xiaoming; Liu, Ying; Long, Xifa

doi:10.1039/c8ra00732b

Cited by 9 publications

(5 citation statements)

References 56 publications

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“…The peaks of O–II are attributed to the formation of oxygen vacancies, and peak O–III resulted from the chemisorbed oxygen or dissociated oxygen . The intensity of peaks O–II is significantly smaller than that of O–I, which indicates that the content of oxygen vacancies in this ferroelectric material with perovskite structure is less and suppresses the generation of defective dipole pairs, and most of the oxygen ions are present in the lattice positions of the material, stabilizing the phase structure Figure d shows two valence states with different binding energies for the Ni 2p orbital.…”

Section: Results and Discussionmentioning

confidence: 94%

“…47 The intensity of peaks O−II is significantly smaller than that of O−I, which indicates that the content of oxygen vacancies in this ferroelectric material with perovskite structure is less and suppresses the generation of defective dipole pairs, and most of the oxygen ions are present in the lattice positions of the material, stabilizing the phase structure. 48 NiO and Sb 2 O 3 were overdosed. The microstructure, domain morphology, dielectric and electrical properties, ferroelectric analysis, and valence changes of Sb elements were systematically investigated for PNN−PSN−PMN−PZT ceramics and the overdose group.…”

Section: Xps Measurementmentioning

confidence: 99%

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High Piezoelectricity of Multicomponent Lead-Based Ceramics with High Temperature Stability

Liao,

Lu,

et al. 2023

ACS Appl. Electron. Mater.

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The design of the composition and adjustment of multicomponents to achieve a high chemical disorder are the important strategies for obtaining high piezoelectricity at a high depolarization temperature, which is conducive to a wide range of electromechanical applications. Here, the solid-state reaction method is used to prepare PZT-based piezoelectric ceramics; the replacement of A/B site ions by multielements flattens the ferroelectric free energy, which realized the high piezoelectric coefficient d 33 of ∼1000 pC/N at a good Curie temperature T C of 128 °C and the depolarization temperature T FE–FE of 105 °C. The microstructure of the ferroelectric phase and ferroelectric domain is systematically characterized by X-ray diffraction, scanning electron microscopy, piezoresponse force microscopy, and X-ray photoelectron spectroscopy. The atomic-scale substitutions of the A/B site-disordered elements break the long-range polarization order with the accompanied Pb vacancies. The excess Ni2+ ions can regulate the grain growth, and the valence of Sb changed from Sb3+ to Sb5+ , which is able to induce Pb2+ vacancies. These synergistic effects of grain size and vacancy structure optimize the piezoelectric properties and temperature stability.

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Section: Results and Discussionmentioning

confidence: 94%

Section: Xps Measurementmentioning

confidence: 99%

High Piezoelectricity of Multicomponent Lead-Based Ceramics with High Temperature Stability

Liao,

Lu,

et al. 2023

ACS Appl. Electron. Mater.

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“…Table 2 lists the average of remanent polarization, coercive field, and current at 1, 10 5 , and 10 7 cycles. Ferroelectric properties degradation has been associated with intrinsic defects, redistributions of imperfection after switching the dipole process, and punctual defects by doping [ 40 ]. Therefore, BCTZ8-5 showed a high electrical fatigue resistance, which makes it a promising candidate for actuator or nonvolatile random-access memory applications when prepared in thin film form [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Ferroelectric, Dielectric and Electromechanical Performance of Ba0.92Ca0.08Ti0.95Zr0.05O3 Ceramics with an Enhanced Curie Temperature

et al. 2023

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Ba0.92Ca0.08Ti0.95Zr0.05O3 (BCZT8-5) ceramic materials have been scarcely studied as lead-free piezo/ferroelectrics despite their enhanced Curie temperature (>100 °C) with respect to most studied BCZT compositions. In this work, homogeneous dense BCZT8-5 ceramics with grain size in the range of 20 μm, and optimum ferroelectric, dielectric, and electromechanical performance, were prepared by the mixed oxides route using moderate synthesis (1250 °C-2 h) and sintering (1400 °C-2 h) conditions. Thickness-poled thin disks and monomodal shear plate resonators were used for the determination of piezoelectric coefficients, coupling factors, elastic, and dielectric permittivity coefficients, including all losses, by iterative analysis of impedance curves at resonance. Furthermore, the thermal evolution of the piezoelectric characteristics at resonance was determined to assess the enhanced working range of the ceramics (≈100 °C). Ferroelectric hysteresis loops and strains vs. electric-field butterfly loops were also measured and showed soft behavior with Ec = 2 kV/cm, Pr = 12 μC/cm2 after a maximum applied field of 3 kV was used. The ceramics showed a high endurance of P-E cycles to electrical fatigue up to 107 cycles. Moreover, dielectric properties as a function of temperature were also accomplished and showed nearly normal ferroelectric behavior, characteristic of samples with low crystallographic disorder. Overall, these ceramics showed high sensitivity and higher stability than other currently studied BCZT compositions.

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“…The content of Sn indirectly reflects the content of defect dipoles. 19,20 Electrical properties were measured using standard ferroelectric system (TF2000 Analyzer, aix-ACCT System GmbH). Capacitance-voltage (C-V) curves were measured by superimposing a small-signal fast-varying (1 kHz) AC electric field (E AC ) on a slow-varying (0.1 Hz) AC electric field.…”

Section: Methodsmentioning

confidence: 99%

“…Our previous works revealed that defect dipoles formed as

{false({Sn}_{Ti}^{″} ‐ V_{O}^{\cdot \cdot} false)}^{\times}

in this material system due to the change in valence of Sn. The content of Sn indirectly reflects the content of defect dipoles 19,20 . Electrical properties were measured using standard ferroelectric system (TF2000 Analyzer, aixACCT System GmbH).…”

Section: Methodsmentioning

confidence: 99%

Effects of defect dipoles on tunable dielectric response in relaxor ferroelectric ceramics

Wang

Yang

et al. 2020

J Am Ceram Soc

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Tunable dielectric materials have drawn much attention due to their wide applications including capacitors and microwave tunable devices. Ferroelectrics materials have special spontaneous polarization which can be reversibly switched by an external electric field. Therefore, tunable dielectric constant can be easily achieved in ferroelectrics. However, the study of nonlinear dielectric response induced by defect dipoles is rarely concerned. Here, we report the effects of defect dipoles on tunable dielectric response under alternative current (AC) and direct current (DC) electric field in defect dipoles introduced Pb(Lu1/2Nb1/2)O3–PbTiO3 ceramics. A modified Rayleigh model is proposed to successfully characterize dielectric nonlinearity and reveals the interaction between domain walls and defect dipoles. The defect dipoles had more sensitive effect on dielectric response under AC field than that of defect dipoles‐free samples. The drop of intrinsic dielectric contribution under AC field results from the detriment effect of defect dipoles. The irreversible contribution is altered by the movements of defect dipoles under AC field, subsequently inducing the nonlinearity of dielectric response. Samples with defect dipoles have larger tunable scope of dielectric properties than that of defect dipoles‐free samples. The present work discovers the potential of application of defect dipoles‐tuned dielectric response ferroelectrics in devices which requires both high AC and DC biases, and help to better understand the complex dielectric response of ferroelectrics.

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Fatigue endurance enhancement of Sn-doped Pb(Lu_1/2Nb_1/2)O₃–PbTiO₃ ceramics

Abstract: Fatigue endurance has been enhanced of Sn-doped Pb(Lu1/2Nb1/2)O3–PbTiO3 ceramics, exhibiting an abnormal self-rejuvenation of remnant polarization.

Cited by 9 publications

References 56 publications

High Piezoelectricity of Multicomponent Lead-Based Ceramics with High Temperature Stability

High Piezoelectricity of Multicomponent Lead-Based Ceramics with High Temperature Stability

Ferroelectric, Dielectric and Electromechanical Performance of Ba0.92Ca0.08Ti0.95Zr0.05O3 Ceramics with an Enhanced Curie Temperature

Effects of defect dipoles on tunable dielectric response in relaxor ferroelectric ceramics

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