Enhanced electrical properties and large electrocaloric effect in lead-free Ba0.8Ca0.2ZrxTi1−xO3 (x = 0 and 0.02) ceramics

Merselmiz, Soukaina; Hanani, Zouhair; Moumen, S. Ben; Matavž, Aleksander; Mezzane, D.; Novak, Nikola; Abkhar, Z.; Hajji, L.; Amjoud, M.; Gagou, Y.; Hoummada, K.; Črešnar, Dejvid; Kutnjak, Zdravko; Rožič, B.

doi:10.1007/s10854-020-04259-w

Cited by 15 publications

(21 citation statements)

References 67 publications

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“…Table 2 compares the EC response of BCZT ceramic with other lead-free ceramics. At 14 kV cm À1 , Merselmiz et al 38 Moreover, Fig. 5d depicts the thermal-evolution of z at 25 kV cm À1 , showing a broad peak around 100 C. It should be mentioned that the electrocaloric effects preserve signicant values over a broad temperature span (T span ).…”

Section: Electrocaloric Effectmentioning

confidence: 87%

“…A buttery-like shape was observed at temperatures below T C due to the lattice distortion and the switching and movement of domain walls by the electric eld. 15,38,39 Consequently, the maximal average strain (S max ) was found to be 0.062%. However, a sprout-like shape was noticed at higher temperatures due to the ferroelectricity's gradual disruption.…”

Section: Piezoelectric Propertiesmentioning

confidence: 99%

“…Merselmiz et al38 reported that Ba 0.80 Ca 0.20 Zr 0.02 Ti 0.98 O 3 ceramic displays a maximum value of strain and d * 33 of 0.078% and 310 pm V À1 , respectively, under 25 kV cm À1 and at 110 C. Besides, Chaiyo et al42 stated that Ba 0.80 Ca 0.20 Zr 0.05 Ti 0.95 O 3 ceramic exhibits d * 33 of 284 pm V À1 under 30 kV cm À1 . However, at the similar electric eld, Pisitpipathsin et al 43 reported high strain and d * 33 of 0.15% and 513 pm V À1 , respectively, in Ba 0.91 Ca 0.09 Zr 0.04 Ti 0.96 O 3 ceramic around 123 C. Moreover, at 70 kV cm À1 , Ba 0.85 Ca 0.15 Zr 0.90 Ti 0.10 O 3 ceramic shows a similar strain (0.066%) and high d * 33 value of 942 pm V À1 at room temperature, as reported by Praveen et al…”

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confidence: 99%

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Thermal-stability of the enhanced piezoelectric, energy storage and electrocaloric properties of a lead-free BCZT ceramic

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Section: Electrocaloric Effectmentioning

confidence: 87%

Section: Piezoelectric Propertiesmentioning

confidence: 99%

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confidence: 99%

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Thermal-stability of the enhanced piezoelectric, energy storage and electrocaloric properties of a lead-free BCZT ceramic

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“…5–7 Nevertheless, due to the growing environmental concerns about the toxicity of lead-based piezoelectrics, replacing Pb-based materials with homologs having comparable piezoelectric properties but without lead is an emerging task. 6,8–10 The BaTi 1− x Sn x O 3 solid solution is considered as one of the potential candidates for piezoelectric devices. 11–13 Wang et al reported the highest value in lead-free piezoceramics with a giant piezoelectric coefficient d 33 of ∼1100 pC N −1 in BaTi 1− x Sn x O 3 with x = 0.11.…”

Section: Introductionmentioning

confidence: 99%

“…16 This high value, comparable to those of lead-based materials such as soft PZT, 16 has drawn substantial attention to lead-free BaTiO 3 (BT)-based ferroelectric ceramics. 9,17–22 Lately, we reported BCZT ceramics with an enhanced of 234 pm V −1 and relatively stable piezoelectric properties due to a higher T c of ∼90 °C. 23…”

Section: Introductionmentioning

confidence: 99%

Design of lead-free BCZT-based ceramics with enhanced piezoelectric energy harvesting performances

Merselmiz

Hanani

Mezzane

et al. 2022

Phys. Chem. Chem. Phys.

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Enhanced Piezoelectric, Ferroelectric, and Electrostrictive Properties of Lead‐Free (1‐x)BCZT‐(x)BCST Electroceramics with Energy Harvesting Capability

Baraskar

Kolekar

Thombare

et al. 2023

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Next‐generation electronics and energy technologies can now be developed as a result of the design, discovery, and development of novel, environmental friendly lead (Pb)‐free ferroelectric materials with improved characteristics and performance. However, there have only been a few reports of such complex materials’ design with multi‐phase interfacial chemistry, which can facilitate enhanced properties and performance. In this context, herein, novel lead‐free piezoelectric materials (1‐x)Ba0.95Ca0.05Ti0.95Zr0.05O3‐(x)Ba0.95Ca0.05Ti0.95Sn0.05O3, are reported, which are represented as (1‐x)BCZT‐(x)BCST, with demonstrated excellent properties and energy harvesting performance. The (1‐x)BCZT‐(x)BCST materials are synthesized by high‐temperature solid‐state ceramic reaction method by varying x in the full range (x = 0.00–1.00). In‐depth exploration research is performed on the structural, dielectric, ferroelectric, and electro‐mechanical properties of (1‐x)BCZT‐(x)BCST ceramics. The formation of perovskite structure for all ceramics without the presence of any impurity phases is confirmed by X‐ray diffraction (XRD) analyses, which also reveals that the Ca2+, Zr4+, and Sn4+ are well dispersed within the BaTiO3 lattice. For all (1‐x)BCZT‐(x)BCST ceramics, thorough investigation of phase formation and phase‐stability using XRD, Rietveld refinement, Raman spectroscopy, high‐resolution transmission electron microscopy (HRTEM), and temperature‐dependent dielectric measurements provide conclusive evidence for the coexistence of orthorhombic + tetragonal (Amm2 + P4mm) phases at room temperature. The steady transition of Amm2 crystal symmetry to P4mm crystal symmetry with increasing x content is also demonstrated by Rietveld refinement data and related analyses. The phase transition temperatures, rhombohedral‐orthorhombic (TR‐O), orthorhombic‐ tetragonal (TO‐T), and tetragonal‐cubic (TC), gradually shift toward lower temperature with increasing x content. For (1‐x)BCZT‐(x)BCST ceramics, significantly improved dielectric and ferroelectric properties are observed, including relatively high dielectric constant εr ≈ 1900–3300 (near room temperature), εr ≈ 8800–12 900 (near Curie temperature), dielectric loss, tan δ ≈ 0.01–0.02, remanent polarization Pr ≈ 9.4–14 µC cm−2, coercive electric field Ec ≈ 2.5–3.6 kV cm−1. Further, high electric field‐induced strain S ≈ 0.12–0.175%, piezoelectric charge coefficient d33 ≈ 296–360 pC N−1, converse piezoelectric coefficient ≈ 240–340 pm V−1, planar electromechanical coupling coefficient kp ≈ 0.34–0.45, and electrostrictive coefficient (Q33)avg ≈ 0.026–0.038 m4 C−2 are attained. Output performance with respect to mechanical energy demonstrates that the (0.6)BCZT‐(0.4)BCST composition (x = 0.4) displays better efficiency for generating electrical energy and, thus, the synthesized lead‐free piezoelectric (1‐x)BCZT‐(x)BCST samples are suitable for energy harvesting applications. The results and analyses point to the outcome that the (1‐x)BCZT‐(x)BCST ceramics as a potentially strong contender within the family of Pb‐free piezoelectric materials for future electronics and energy harvesting device technologies.

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Enhanced electrical properties and large electrocaloric effect in lead-free Ba0.8Ca0.2ZrxTi1−xO3 (x = 0 and 0.02) ceramics

Cited by 15 publications

References 67 publications

Thermal-stability of the enhanced piezoelectric, energy storage and electrocaloric properties of a lead-free BCZT ceramic

Thermal-stability of the enhanced piezoelectric, energy storage and electrocaloric properties of a lead-free BCZT ceramic

Design of lead-free BCZT-based ceramics with enhanced piezoelectric energy harvesting performances

Enhanced Piezoelectric, Ferroelectric, and Electrostrictive Properties of Lead‐Free (1‐x)BCZT‐(x)BCST Electroceramics with Energy Harvesting Capability

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