Enhanced piezoelectric properties of off-stoichiometric strontium bismuth tantalate Sr0.8Bi2.2Ta2O9 ceramics

Takeda, Hiroaki; Fujioka, C.; Aoyagi, Rintaro; Okamura, Soichiro; Shiosaki, Tadashi

doi:10.1007/s00339-004-3073-4

Cited by 9 publications

(11 citation statements)

References 16 publications

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“…6(a) and (b) are 6500 and 5400, respectively. The Q m value of the SBTV ceramics is higher than that of the SBT ceramics [10]. Since an electrical breakdown occurs during the poling process, the piezoelectric properties except the (33)-mode of the SBN ceramics could not be investigated in this study.…”

Section: Resultsmentioning

confidence: 96%

“…Among the many BLSF materials, the SrBi 2 Ta 2 O 9 (SBT) and SrBi 2 Nb 2 O 9 (SBN) based thin films have been intensively studied by many researchers for use in nonvolatile ferroelectric random access memories (FeRAMs) [1][2][3]. On the other hand, the piezoelectric properties of SBT and SBNbased materials have also been studied by several groups [4][5][6][7][8][9][10]. Recently, one of the authors (R. Aoyagi) investigated the influence of starting material composition on the piezoelectric properties of Sr x Bi y Ta 2 O 9 ceramics and reported [10] that the superior piezoelectric properties were obtained for the compositions of x = 0.8 and y = 2.2.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the piezoelectric properties of SBT and SBNbased materials have also been studied by several groups [4][5][6][7][8][9][10]. Recently, one of the authors (R. Aoyagi) investigated the influence of starting material composition on the piezoelectric properties of Sr x Bi y Ta 2 O 9 ceramics and reported [10] that the superior piezoelectric properties were obtained for the compositions of x = 0.8 and y = 2.2. Also, the SrBi 2 Nb 2 O 9 -based ceramics have attracted attention as piezoelectric materials for resonator applications since they have a high mechanical quality factor (Q m ) and a small temperature coefficient of resonance frequency [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

et al. 2006

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Vanadium-substituted strontium bismuth tantalate, Sr 0.8 Bi 2.2 Ta 2−x V x O 9 (SBTVx), and strontium bismuth niobate, SrBi 2 Nb 2−x V x O 9 (SBNVx), ceramics were synthesized by a low-temperature processing, and their dielectric, ferroelectric and piezoelectric properties were characterized. With the partial substitution of tantalum or niobium by vanadium cations, the single phase of the ABi 2 M 2 O 9 -type structure was preserved and the sintering temperature was significantly decreased. For the SBNV ceramics, the T c of 437 • C for x = 0.0, the vanadium content hardly changed. On the other hand, the T c of the SBTV ceramics increased from 408 • C for the non-substituted SBTV to 414 • C for x = 0.05 and then with the increasing vanadium content, the T c decreased to 379 • C for x = 0.20. The remanent polarizations, P r , of SBTV and SBNV at room temperature were 4.9 and 5.4 μC/cm 2 , respectively. All the obtained independent electromechanical coupling factors of the SBTV0.05 ceramics were as follows: k p = 0.119, k 31 = 0.073, k 33 = 0.165, k 15 = 0.051 and k t = 0.134, and the SBNV0.05 ceramics were as follows: k p = 0.074, k 31 = 0.045, k 33 = 0.175, k 15 = 0.106 and k t = 0.140. These coupling factors were higher than those of the non-substituted materials. From these results, the vanadium-substituted SBT and SBNbased materials can be expected to be lead-free piezoelectric resonator materials that can be prepared at low sintering temperatures.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

et al. 2006

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“…[1][2][3] In addition, the piezoelectric properties of SBTand SBN-based materials have also been studied by several groups. [4][5][6][7][8][9][10][11][12] SBN-based materials are considered superior candidates for fine frequency tolerance resonators because of their low electromechanical coupling factor (around 15%) and their low temperature coefficients of resonance frequency (jTCFj < 33 ppm/ C in the thickness extensional mode). [6][7][8][9] In refs.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Properties of Vanadium-Substituted Strontium Bismuth Niobate

Aoyagi

Inai

Hiruma

et al. 2005

Jpn. J. Appl. Phys.

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Vanadium-substituted strontium bismuth niobate, SrBi 2 Nb 1:95 V 0:05 O 9 (SBNV), ceramics were synthesized by a lowtemperature process, and the detailed piezoelectric properties of the SBNV ceramics were characterized. Dense SBNV ceramics were obtained at a sintering temperature of 950 C, which is 200 C lower than that for nonsubstituted (SBN) ceramics. With the substitution of vanadium cations for niobium the ferroelectric D-E hysteresis loops were observed at room temperature and the remanent polarization, P r , and coercive field, E c , obtained were 5.4 mC/cm 2 and 105 kV/cm, respectively. The independent electromechanical coupling factors obtained, which were characterized by the resonance-antiresonance method, were as follows: k p ¼ 0:074, k 31 ¼ 0:045, k 33 ¼ 0:175, k 15 ¼ 0:106, and k t ¼ 0:140. The mechanical quality factor, Q m , of the SBNV ceramics in the (33)-mode was 5500, which was about three times that of SBN. The temperature dependences of the resonance frequency (TCF) in the length extensional vibration mode of the SBNV and SBN ceramics were 42.1 ppm/ C and 34.6 ppm/ C, respectively.

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“…It has also been observed that strontium deficiency or an excess of bismuth in SBN ceramics can significantly improve their dielectric and ferroelectric properties. [11][12][13] Researchers have invested considerable effort in enhancing the dielectric and ferroelectric properties of SBN ceramics through various synthesis mechanisms or element substitutions. Dopants can be substituted in the Bi 2 O 3 layer and/or at the A or B-site of the perovskite-like unit.…”

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confidence: 99%

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Singh,

Gautam,

Luthra

et al. 2023

ECS J. Solid State Sci. Technol.

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In this study, the authors focused on the preparation and characterization of Lead-free ferroelectric ceramics known as Sr1−XBi2+2X/3Nb2O9: SBBNX, where 0.0≤ × ≤0.4. The ceramics were synthesized using a conventional solid-state reaction route. The researchers performed X-ray diffraction (XRD) analysis to confirm the phase formation and employed the Rietveld refinement technique. The results indicated that the prepared SBBNX ceramics exhibited a single phase with an orthorhombic structure, specifically belonging to the A21am space group. All samples were subjected to analysis using field emission scanning electron microscopy (FESEM) to investigate their surface morphology. The micrographs revealed a uniform distribution of grains (of size 2–4 μm ) on the surface, with distinct grain boundaries. An increasing trend in both the dielectric constant (from 99 to 220 at room temperature) and transition temperature (from 396 °C to 490 °C) was noted with an increase of Bi content in SBN. The researchers estimated the activation energies by analyzing the Arrhenius plots of the ac conductivity. The obtained values ranged from 0.62 to 1.25 eV, indicating the presence of motion of oxygen vacancies in the SBBNX ceramics. The primary objective of this study was to optimize the Sr/Bi ratio in SBBNX ceramics to enhance their potential use in non-volatile random access memory (NVRAM) applications and high-temperature piezoelectric devices.

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Enhanced piezoelectric properties of off-stoichiometric strontium bismuth tantalate Sr0.8Bi2.2Ta2O9 ceramics

Cited by 9 publications

References 16 publications

Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

Piezoelectric Properties of Vanadium-Substituted Strontium Bismuth Niobate

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

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Enhanced piezoelectric properties of off-stoichiometric strontium bismuth tantalate Sr0.8Bi2.2Ta2O9 ceramics

Cited by 9 publications

References 16 publications

Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

Piezoelectric properties of SrBi2M2− xVxO9 (M = Nb and Ta) ceramics

Piezoelectric Properties of Vanadium-Substituted Strontium Bismuth Niobate

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr1−XBi2+2X/3Nb2O9 Ceramics

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Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics