Structural, dielectric and piezoelectric properties of (Bi0.5Na0.5)TiO3–(Bi0.5K0.5)TiO3–Bi(Zn0.5Ti0.5)O3 thin films prepared by sol–gel method

Li, Wei; Zeng, Huarong; Zhao, Kun; Hao, Jigong; Zhai, Jiwei

doi:10.1016/j.ceramint.2013.12.143

Cited by 24 publications

(9 citation statements)

References 22 publications

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“…For example, Xu et al report a

{Bi}_{4} {Ti}_{3} O_{12}

secondary phase (similar to the pyrochlore reported here) after heat treatment at 500–550 °C when preparing BNT-BT [25,26]. Li et al made BNT-BKT-BZT (K and Zn doped BNT) thin films by an organic solvent procedure, and reported a small amount of pyrochlore after pyrolysis at 400 °C and sintering at 700 °C [36]. Alonso-Sanjosé et al also made BNT-BT thin films by organic solvent sol-gel method, and reported formation of a pyrochlore phase after heat treatment at 600 °C, but not after 650 °C [37].…”

Section: Discussionsupporting

confidence: 64%

Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition

2017

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Piezoelectric ceramics are widely used in actuator applications, and currently the vast majority of these devices are based on Pb(Zr,Ti)O3, which constitutes environmental and health hazards due to the toxicity of lead. One of the most promising lead-free material systems for actuators is based on Bi0.5Na0.5TiO3 (BNT), and here we report on successful fabrication of BNT thin films by aqueous chemical solution deposition. The precursor solution used in the synthesis is based on bismuth citrate stabilized by ethanolamine, NaOH, and a Ti-citrate prepared from titanium tetraisopropoxide and citric acid. BNT thin films were deposited on SrTiO3 and platinized silicon substrates by spin-coating, and the films were pyrolized and annealed by rapid thermal processing. The BNT perovskite phase formed after calcination at 500 °C in air. The deposited thin films were single phase according to X-ray diffraction, and the microstructures of the films shown by electron microscopy were homogeneous and dense. Decomposition of the gel was thoroughly investigated, and the conditions resulting in phase pure materials were identified. This new aqueous deposition route is low cost, robust, and suitable for development of BNT based thin film for actuator applications.

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“…For example, Xu et al report a

{Bi}_{4} {Ti}_{3} O_{12}

Section: Discussionsupporting

confidence: 64%

Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition

2017

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“…Since no peak splitting of the perovskite‐phase is observed, the structure of the solid solutions can be identified as a pseudocubic perovskite structure. There is no obvious existence of other phases with the sole exception of tiny amounts of a sillenite and a pyrochlore phase reflected by very weak diffraction peaks at 2 θ ≈ 28° and 30°, respectively . Peaks with relatively strong intensities at 2 θ ≈ 36° and 40° are K β and K α diffraction peaks of (111) planes of Pt, the peaks at 2 θ ≈ 33° are K α diffraction peaks of (200) planes of Si, and the rest of the peaks that do not belong to the thin films and the Pt and Si layers in the substrates are attributed to the SiO 2 layer in the substrates .…”

Section: Resultsmentioning

confidence: 99%

Reduced leakage current and enhanced piezoelectricity of BNT–BT–BMO thin films

Song

et al. 2019

J Am Ceram Soc

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BiMeO3 (where Me denotes a transition metal) is often used as a chemical modifier to form the Bi0.5Na0.5TiO3‐based solid solutions and to improve the electromechanical properties of the materials. In this study, BiMnO3 was selected as a chemical modifier, and (1 − x)(0.94Bi0.5Na0.5TiO3‐0.06BaTiO3)–xBiMnO3 thin films with x = 0, 0.005, 0.01, and 0.015 were fabricated using the metal organic decomposition method to study the contributions of the third end‐member BiMnO3 to the reduction in the leakage current and the enhancement of the piezoelectric properties of Bi0.5Na0.5TiO3‐BaTiO3 thin films. Thin films with 1 mol% BiMnO3 exhibit a lower leakage current, and a better piezoelectricity and ferroelectricity, whose Smax/Emax, Pmax, 2Ec, and εr are 100.4 pm/V, 48.0 μC/cm2, 54.9 kV/cm, and 942, respectively.

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“…However, the high volatility and strong toxicity of lead oxide during sintering have caused severe ecological and environmental problems [4,5]. Therefore, extensive efforts have been done to find a promising way to solve this problem and develop new lead-free piezoelectric ceramics with excellent properties to replace lead based ceramics [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, electrical properties of Bi2NiMnO6-doped 0.935(Bi1/2Na1/2) TiO3–0.065BaTiO3 lead-free piezoelectric ceramics

Cheng

Chu

et al. 2015

Journal of Alloys and Compounds

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Structural, dielectric and piezoelectric properties of (Bi0.5Na0.5)TiO3–(Bi0.5K0.5)TiO3–Bi(Zn0.5Ti0.5)O3 thin films prepared by sol–gel method

Cited by 24 publications

References 22 publications

Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition

Fabrication of Lead-Free Bi0.5Na0.5TiO3 Thin Films by Aqueous Chemical Solution Deposition

Reduced leakage current and enhanced piezoelectricity of BNT–BT–BMO thin films

Microstructure, electrical properties of Bi2NiMnO6-doped 0.935(Bi1/2Na1/2) TiO3–0.065BaTiO3 lead-free piezoelectric ceramics

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