Rare-earth doped (K0.5Na0.5)NbO3 multifunctional ceramics

Du, Juan; Xu, Zhijun; Chu, Ruiqing; Hao, Jigong; Li, Wei; Jiang, Guicheng; Zheng, Peng

doi:10.1007/s10854-016-6186-6

Cited by 12 publications

(8 citation statements)

References 44 publications

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“…Since 2004, the K x Na 1-x NbO 3 perovskitetype material has been established to be a potential substitute for PZT due to its high piezoelectric coefficient d 33 (up to 300 pC/N [5]) leading to an important investigation of this phase [6,7]. The K x Na 1-x NbO 3 perovskite phase has been investigated in bulk [8], thin films [9], single crystals [10] and for photovoltaic applications [11], energy storage [12], luminescence properties [13], sensors [14] or medical imaging [15]. However, in the KNN system, many other phases of potential interest exist without being thoroughly investigated.…”

Section: Introductionmentioning

confidence: 99%

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Aspe

Demange

Waroquet

et al. 2020

Journal of Alloys and Compounds

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Pulsed laser deposition parameters have been determined to synthesize pure Tetragonal Tungsten Bronze (TTB) phase thin films in the (K , Na)-Nb-O system (KNN). In relation to the high volatility of alkaline elements, it was found that the target composition and the targetsubstrate distance are of first importance. The TTB phase was identified by X-ray and electron diffraction and the surface microstructure consisting mainly of nanorods supports the formation of hallmark of the TTB phase. Poly-oriented nanorods have been obtained on both C-plane sapphire and (111)Pt/TiO 2 /SiO 2 /(001)Si substrates whereas horizontal nanorods oriented along the (hk0) planes have been grown on (100) and (110) SrTiO 3. All the nanorods are parallel together when grown on (110) SrTiO 3 and they present two in-plane orientations rotated of 90° from each other on (100) SrTiO 3. Dielectric characteristics (dielectric permittivity ε r , and loss tangent tanδ) have been measured at low (1 kHz-1 MHz) and high (1 GHz-40 GHz) frequencies, on films deposited on Pt coated silicon and sapphire, respectively. A value of ε r = 200 at 1 kHz with tanδ = 0.015 were measured in a parallel plate capacitor configuration, whereas ε r = 130 and tanδ = 0.20 at 10 GHz were retrieved from transmission lines printed on the KNN TTB thin film grown on C-plane sapphire. Raman investigations of the TTB films were performed in the temperature range 77-873 K, confirming the TTB phase formation and the absence of structural transition. Piezoelectric Force Microscopy measurements evidenced a piezoelectric signal although no switching could be performed. However the dielectric measurements, complicated by high leakage currents when a DC voltage was applied, did not evidence any proof of ferroelectricity for the undoped KNN TTB films whereas results reported on other niobates (A,A') 0.6 Nb 10 O 30 (with A: K, Na and A': Sr, Ba, Ca) have shown Curie temperatures, lying between 156°C and 560°C, separating the paraelectric phase (space group: P4/mbm N°127) and the ferroelectric one (space group: P4bm N°100).

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Section: Introductionmentioning

confidence: 99%

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Aspe

Demange

Waroquet

et al. 2020

Journal of Alloys and Compounds

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“…The dielectric response in ferroelectric materials usually nonlinear under external electric field can be adequately described using Rayleigh relations Eqs. (3,4) [28,29] at sub-switching of domain at low amplitude of electric. The Rayleigh model assumed that dielectric activity can be divided into intrinsic and extrinsic contributions, where the intrinsic contribution reflects the lattice distortion or domain wall propagation, while the extrinsic contribution can be ascribed to the domain wall displacement and as consequently the domain grows.…”

Section: Rayleigh Analysismentioning

confidence: 99%

“…Ferroelectric ceramic materials are widely used in several electronic applications, such as sensors, actuators, and transducers [1][2][3][4][5][6][7]. Owing to the environmental restrictions on lead-based materials and their high toxicity, (K 1-x ,Na x ) NbO 3 has drawn much attention as promising lead-free candidates materials instead of lead-based such as PZT due to its excellent performance [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Sub-switching domain effect for analysis the non-linear dielectric behavior of (K0.49 Na0.49Li0.02) (Nb0.98Sb0.02)O3 ceramic based on Rayleigh model

Atito

Shaban

Salem

et al. 2022

J. Korean Ceram. Soc.

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The solid-state sintering technique has been implemented to synthesize (K0.5Na0.5NbO3)-0.02(LiSbO3) (KNN-LS) Pb-free ceramic. The crystal structure, dielectric and ferroelectric properties of the prepared material were investigated. Pure orthorhombic perovskite phase [I(220)/I(002) = 1.68] with Amm2 space group has been detected at room temperature for sintered ceramic. Two anomalous permittivity peaks corresponding to orthorhombic–tetragonal (O–T) phase transition at T = 175 °C and tetragonal–cubic (T–C) phase transition at T = 355 °C have been observed. At polymorphic phase transition, the Rayleigh model shown the extrinsic contributions caused by domain wall motion is about 80%, while the intrinsic contribution attributed to the lattice distortion is about 20%. Ferroelectric properties were investigated in a wide range of temperatures (RT-225)°C. The results shown a conductive material at high temperature due to the higher cation disorder and leakage current above PPT. The present results are interested for understanding the mechanism of t permittivity–temperature behavior of KNN-doped LS ions based on Rayleigh model. The large remnant polarization and low coercive field below PPT make the material a suitable candidate for energy storage application.

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“…Deng et al [11] studied the role of RE (Gd 3+ , Ho 3+ , Pr 3+ , Y 3+ , Yb 3+ , and Sm 3+ ) addition in the BNT-based ceramics where maximum d 33 of 190 pC N −1 and d 33 * of 340 pm V −1 were obtained. Similarly, Du et al [12] doped the KNN with different RE elements (Eu 3+ , Er 3+ , Dy 3+ , and Pr 3+ ), and the highest d 33 of 94 pC N −1 and d 33 * of 300 pm V −1 were found. All these abovereported results show that the modification of PZT, PMN-PT, BCZT, BNT, and KNN ceramics by RE elements modification In piezoceramics, the Curie temperature (T C ) and piezoelectric coefficient (d 33 ) are often inversely proportional, so it is very difficult to optimize high piezoelectricity and T C simultaneously.…”

mentioning

confidence: 94%

“…Similarly, Du et al. [ 12 ] doped the KNN with different RE elements (Eu 3+ , Er 3+ , Dy 3+ , and Pr 3+ ), and the highest d 33 of 94 pC N −1 and d 33 * of 300 pm V −1 were found. All these above‐reported results show that the modification of PZT, PMN‐PT, BCZT, BNT, and KNN ceramics by RE elements modification can improve their functional properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Piezoelectricity by Novel Poling Method of the Rare‐Earth Modified BiFeO₃–BaTiO₃ Lead‐Free Ceramics

Habib

Zhou

Tang

et al. 2023

Adv Elect Materials

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In piezoceramics, the Curie temperature (TC) and piezoelectric coefficient (d33) are often inversely proportional, so it is very difficult to optimize high piezoelectricity and TC simultaneously. In addition, the high and temperature‐insensitive piezoelectric strain coefficient (d33*) with small hysteresis is also a longstanding obstacle in the development of lead‐free ceramics. In this work, a facile approach of donor doping strategy is adopted to replace Ba2+ with Yb3+, Y3+, Sm3+, and Nd3+ as a result, a high TC of 450 °C and outstanding d33 of 422–436 pC N−1 is achieved by a novel magnetic poling method. Thermally‐stable and outstanding piezoelectric strain performance (d33* ≈ 520–550 pm V−1 and ΔST ≈ 10%) with small strain hysteresis (H < 20%) results are highly encourageable in lead‐free ceramics. The main factors contributing to high piezoelectricity are the morphotropic phase boundary, suppression of defect charges by donor doping, thermal quenching, mesoscale nanodomain size, and novel poling method. The excellent piezoelectric performance and high TC of this work are superior to those of state‐of‐the‐art piezoceramics. The synergistic approaches of compositional design strategy and novel poling process in this work are highly beneficial for temperature‐insensitive piezoelectric sensor and actuator applications.

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Rare-earth doped (K0.5Na0.5)NbO3 multifunctional ceramics

Cited by 12 publications

References 44 publications

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Sub-switching domain effect for analysis the non-linear dielectric behavior of (K0.49 Na0.49Li0.02) (Nb0.98Sb0.02)O3 ceramic based on Rayleigh model

Enhancement of Piezoelectricity by Novel Poling Method of the Rare‐Earth Modified BiFeO₃–BaTiO₃ Lead‐Free Ceramics

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Rare-earth doped (K0.5Na0.5)NbO3 multifunctional ceramics

Cited by 12 publications

References 44 publications

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Tetragonal tungsten bronze phase thin films in the K–Na–Nb–O system: Pulsed laser deposition, structural and dielectric characterizations

Sub-switching domain effect for analysis the non-linear dielectric behavior of (K0.49 Na0.49Li0.02) (Nb0.98Sb0.02)O3 ceramic based on Rayleigh model

Enhancement of Piezoelectricity by Novel Poling Method of the Rare‐Earth Modified BiFeO3–BaTiO3 Lead‐Free Ceramics

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Enhancement of Piezoelectricity by Novel Poling Method of the Rare‐Earth Modified BiFeO₃–BaTiO₃ Lead‐Free Ceramics