Dielectric, ferroelectric and piezoelectric properties of Nb5+ doped BCZT ceramics

Parjansri, Piewpan; Intatha, Uraiwan; Eitssayeam, Sukum

doi:10.1016/j.materresbull.2015.01.040

Cited by 57 publications

(28 citation statements)

References 35 publications

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“…A maximum P r was observed in the ceramics, showing that the enhanced ferroelectric properties also contributed to the larger d 33 and k p . This result is consistent with the data shown inFig 4.The decrease observed in P r and E c may be attributable to an increase in the number of oxygen vacancies, which would lead to pinning of grain boundaries and switching of domain boundaries[25]. Moreover, with further increases CBN content, substitution by Ti 4+ /Zr 4+ would narrow the octahedral void.…”

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confidence: 91%

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Phase transition and improved electrical performance of Ba0.85Ca0.15Zr0.1Ti0.9O3–Ca0.28Ba0.72Nb2O6 ceramics with high Curie temperature

Chao

Wang²,

Liang

et al. 2016

Materials & Design

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confidence: 91%

“…Lattice diffusion of vacancies from the pore to the grain boundaries leads to grain growth in the sintering process of BCZT ceramics. Similar results have been reported in BCZT-xNb 2 O 5 ceramics[25]. The average grain sizes of ceramics tended to be lower for the 0.3mol%CBN-doped BCZT sample (19.6 µm) compared with the higher CBN doped ceramics (6.6 µm).…”

supporting

confidence: 86%

Phase transition and improved electrical performance of Ba0.85Ca0.15Zr0.1Ti0.9O3–Ca0.28Ba0.72Nb2O6 ceramics with high Curie temperature

Chao

Wang²,

Liang

et al. 2016

Materials & Design

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“…Extensive studies with other donor dopants were also carried on the BZT-BCT ceramics [30,[51][52][53][54], as shown in Figure 2 For the equivalent doping of A-site, one of the most typical substitution is Sr 2+ , which can contribute to the microstructure by increasing grainsize and density, and at the same time decrease T c [34,36,58,59]. As a result of fine microstructure and lower T c , excellent piezoelectric properties with large d 33 of 534 pC/N was exhibited in Bai and Li's work when 0.03 mol Sr 2+ was doped [34].…”

Section: Donor Dopingmentioning

confidence: 99%

Prospective of (BaCa)(ZrTi)O3 Lead-free Piezoelectric Ceramics

Liu

Cheng

2019

Crystals

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Piezoelectric ceramics is a functional material that can convert mechanical energy into electrical energy and vice versa. It can find wide applications ranging from our daily life to high-end techniques and dominates a billion-dollar market. For half a century, the working horse of the field has been the polycrystalline PbZr1−xTixO3 (PZT), which is now globally resisted for containing the toxic element lead. In 2009, our group discovered a non-Pb piezoelectric material, (BaCa)(ZrTi)O3 ceramics (BZT-BCT), which exhibits an ultrahigh piezoelectric coefficient d33 of 560–620 pC/N. This result brought extensive interest in the research field and important consequences for the piezoelectric industry that has relied on PZT. In the present paper, we review the recent progress, both experimental and theoretical, in the BZT-BCT ceramics.

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“…BCZT piezoelectric ceramics have attracted extensive attention due to their unique structure [5,6]. Many attempts have been made to treat BCZT in these aspects, including changing methods of synthesis [7,8], modifying BCZT piezoelectric ceramics [9,10] and treating temperatures [11,12]. Yap et al [7] reported that BCZT ceramics were fabricated using the sacrificial fugitive technique, where increasing porosity led to decreasing ferroelectric and piezoelectric properties due to a reduction of polarizable BCZT ceramic.…”

Section: Introductionmentioning

confidence: 99%

Effects of calcination temperatures on the morphology, architecture and dielectric properties of BCZT ceramics

et al. 2019

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Ba 0.85 Ca 0.15)(Zr 0.1 Ti 0.9)O 3 (BCZT) ceramics were prepared by a simple sol-gel method. The effects of calcining temperature on the formation of BCZT ceramics were investigated in detail. The morphological changes and phase transformation of BCZT ceramics were analysed by X-ray diffraction and scanning electron microscopy. It is found that the calcined temperature determines the formation of a crystal phase, crystallinity and grain size. For dielectric properties, dielectric constant was increased first, and then decreased with increasing calcination temperature, in which the maximum dielectric constant of 2732 was achieved at 650 • C under a low-frequency alternating electric field. This may be attributed to the high crystallinity, density and fewer surface defects of BCZT ceramics. The optimum calcination temperature helps to understand the dielectric properties, which indicates that BCZT ceramics are promising lead-free candidates for widely used lead-based piezoelectric materials.

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Dielectric, ferroelectric and piezoelectric properties of Nb5+ doped BCZT ceramics

Cited by 57 publications

References 35 publications

Phase transition and improved electrical performance of Ba0.85Ca0.15Zr0.1Ti0.9O3–Ca0.28Ba0.72Nb2O6 ceramics with high Curie temperature

Phase transition and improved electrical performance of Ba0.85Ca0.15Zr0.1Ti0.9O3–Ca0.28Ba0.72Nb2O6 ceramics with high Curie temperature

Prospective of (BaCa)(ZrTi)O3 Lead-free Piezoelectric Ceramics

Effects of calcination temperatures on the morphology, architecture and dielectric properties of BCZT ceramics

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