Dielectric and piezoelectric properties of (Ba0.95Ca0.05)(Ti0.88Zr0.12)O3 ceramics sintered in a protective atmosphere

Zhang, Suwei; Zhang, Hailong; Zhang, Bo‐Ping; Zhao, Gao-Lei

doi:10.1016/j.jeurceramsoc.2009.06.034

Cited by 91 publications

(26 citation statements)

References 40 publications

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“…The good dielectric properties are consistent with the good density shown in Fig. 3 [34] Figure 5a plots the P-E loops of the BCTZ ceramics sintered at 1320, 1400, 1480 and 1560°C for 2 h, while Fig. 5b shows the T S dependences of remanent polarization P r and coercive field E C .…”

Section: Resultssupporting

confidence: 76%

Correlation of grain size, phase transition and piezoelectric properties in Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Sun

Zheng

Wan

et al. 2015

J Mater Sci: Mater Electron

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Pb-free ceramics Ba 0.85 Ca 0.15 Ti 0.90 Zr 0.10 O 3 inspired by the excellent piezoelectricity of morphotropic phase boundary deriving from a tricritical point have been prepared by a solid state reaction route and the effects of grain size and room-temperature phases of the ceramics have been studied in detail. When sintering temperature rises from 1320 to 1560°C with controlling the dwell time for 2 h, the ceramic sintered at 1480°C possesses the optimum piezoelectricity. We choose 1360 and 1480°C as two distinctive sintering temperatures to further study the effect of dwell time on the electrical properties of the ceramics. The results show that the improved piezoelectric behavior (d 33 * 416 pC/N and k p * 55.8 %) is demonstrated for the Ba 0.85 Ca 0.15 Ti 0.90 Zr 0.10 O 3 ceramic at an optimal sintering temperature of 1480°C and dwell time of 2 h, which is attributed to the largest grain size together with more noticeable rhombohedral-tetragonal phase transition near room-temperature.

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Section: Resultssupporting

confidence: 76%

Correlation of grain size, phase transition and piezoelectric properties in Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Sun

Zheng

Wan

et al. 2015

J Mater Sci: Mater Electron

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show abstract

“…As for dielectric loss tanδ, it increases monotonously from 1.07% (1200 1C) to 1.71 (1350 1C) as the increases of sintering temperature. The variations in the ferroelectric, piezoelectric and dielectric properties as a function of sintering temperature are closely related to the microstructure development [3,31].…”

Section: Resultsmentioning

confidence: 99%

“…So they will cause huge damage to the environment and human body in the preparation process and followed employment. In order to alter this phenomenon, lead-free piezoelectric ceramic systems have drew great attention from the scientific community in recent decades [3][4][5][6]. Because of its relatively high dielectric coefficient, ferroelectric activity and non-linear optical coefficient [7][8][9], BaTiO 3 (BT) system is also considered as one of the most promising lead-free piezoelectric ceramic systems.…”

Section: Introductionmentioning

confidence: 99%

Effects of CuO additive on structure and electrical properties of low-temperature sintered Ba0.98Ca0.02Zr0.02Ti0.98O3 lead-free ceramics

Sun

Zhang

Liu

et al. 2015

Ceramics International

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“…Recently, the newly discovered lead-free Ba(Zr 0.2 Ti 0.8 ) O 3 -x(Ba 0.7 Ca 0.3 )TiO 3 ceramics by Liu and Ren [5] have attracted great attention due to the excellent piezoelectric properties (with d 33 = 300-650 pC/N) [5][6][7][8][9][10]. A d 33 of 650 pC/N is obtained for the composition of (Ba 0.7 Ca 0.3 )TiO 3 -Ba(Zr 0.2 Ti 0.8 )O 3 (BCZT) by optimizing sintering temperature at 1,540°C [7].…”

Section: Introductionmentioning

confidence: 99%

Lead-free (Ba0.7Ca0.3)TiO3-Ba(Zr0.2Ti0.8)O3-xwt %CuO ceramics with high piezoelectric coefficient by low-temperature sintering

Cui

Liu

Jiang

et al. 2011

J Mater Sci: Mater Electron

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Lead-free (Ba 0.7 Ca 0.3 )TiO 3 -Ba(Zr 0.2 Ti 0.8 )O 3 -xwt %CuO(BCZT-xCu) piezoelectric ceramics have been fabricated by the solid-state reaction process and the effects of CuO addition on the phase structure and piezoelectric properties of the ceramics have been studied. Our results reveal that the addition of CuO significantly improves the sinterability of BCZT ceramics which results in a reduction of sintering temperature from 1,540 to 1,350°C without sacrificing the high piezoelectric properties. X-ray diffraction (XRD) data shows that CuO diffuses into the lattice of BCZT-xCu ceramics and a pure perovskite phase forms in the ceramic. SEM images indicate that a small amount of CuO addition affects the microstructure, obviously. Main piezoelectric parameters of these ceramics are optimized around x = 0.04 wt % with a high piezoelectric coefficient (d 33 = 510 pC/N), a planar electromechanical coefficient k p of 45%, a high dielectric constant (e r = 3,762) and a low dissipation factor (tand = 1.05%) at 1 kHz. The results indicate that the BCZT-xCu ceramics are promising lead-free practical applications.

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Dielectric and piezoelectric properties of (Ba0.95Ca0.05)(Ti0.88Zr0.12)O3 ceramics sintered in a protective atmosphere

Cited by 91 publications

References 40 publications

Correlation of grain size, phase transition and piezoelectric properties in Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Correlation of grain size, phase transition and piezoelectric properties in Ba0.85Ca0.15Ti0.90Zr0.10O3 ceramics

Effects of CuO additive on structure and electrical properties of low-temperature sintered Ba0.98Ca0.02Zr0.02Ti0.98O3 lead-free ceramics

Lead-free (Ba0.7Ca0.3)TiO3-Ba(Zr0.2Ti0.8)O3-xwt %CuO ceramics with high piezoelectric coefficient by low-temperature sintering

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