Phase transition, ferroelectric and piezoelectric properties of Ba1−xCaxTi1−yZryO3 lead-free ceramics

Lin, Wei; Fan, Linli; Lin, Dunmin; Zheng, Qiaoji; Fan, Ximing; Sun, Hailing

doi:10.1016/j.cap.2012.07.006

Cited by 25 publications

(10 citation statements)

References 25 publications

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“…All samples featured a dense microstructure with few cavities as a result of the sintering process. The average grain size of the ceramics was *0.7 lm, which was considerably smaller than that reported in the literature studies [27,28]. The fine grain size of the ceramics was believed to be related to the raw material of the as-prepared nanoparticles.…”

Section: Methodscontrasting

confidence: 54%

“…In contrast, Q m showed an opposite tend. Specifically, Q m reached a minimum value of 78.17 at x = 0.4 %, and the relative lower Q m than the literature could enhance the frequency band of the electron component [15,28]. The observed trend around PPT regions was attributed to the relatively low internal stress and weak pinching effects of the domain wall in the PPT region [36,37].…”

Section: Resultsmentioning

confidence: 58%

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Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

et al. 2015

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Lead-free ceramics 0.5Ba 0.7 Ca 0.3 TiO 3 -0.5BaTi 0.8 Zr 0.2 O 3 -xIrO 2 (x = 0-1.2 %) were prepared at a low temperature of 1260°C via sintering the as-synthesized nanoparticles, which were synthesized by a modified Pechini polymeric precursor method. All samples featured high levels of densification under the synthesis conditions; particularly, the ceramic prepared at IrO 2 content of 0.4 % achieved the highest relative density (*97.4 %). Phase transition from tetragonal to orthorhombic and a polymorphic phase transition (PPT) region were observed, which were influenced by the IrO 2 content. The dielectric properties, temperature coefficient of capacitance, ferroelectric properties, and piezoelectric properties as a function of IrO 2 content were thoroughly studied. Optimal electrical properties (remnant polarization, piezoelectric constant, and planar electromechanical coupling factors, i.e., P r = 6.28 lC/cm 2 , d 33 = 199 pC/N, and k p = 0.258) were obtained around the PPT region. The findings of the ceramic electrical properties by IrO 2 doping are believed to be insightful in the development of lead-free dielectric and ferroelectric materials.

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Section: Methodscontrasting

confidence: 54%

Section: Resultsmentioning

confidence: 58%

Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

et al. 2015

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“…Generally, BaTiO 3 based ceramics exhibit a sharp dielectric curve at T C . In this study, it can be seen that the dielectric curve at T C of the BCTZ‐xCuO ceramics demonstrated a broadened dielectric peak at T C when CuO doping increased (Figure ).…”

Section: Resultsmentioning

confidence: 54%

Phase Ratio, Dielectric, Ferroelectric, and Magnetic Properties of BCTZ Ceramics with CuO Doping Synthesized by the Solid State Combustion Technique

Yotthuan

Kornphom²,

Prasertpalichat

et al. 2019

Physica Status Solidi (a)

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This work investigates the effect of CuO doping (0-1.0 wt%) on the phase formation, microstructure, electric, and magnetic properties of (Ba 0.85 Ca 0.15 ) (Ti 0.90 Zr 0.10 )O 3 (BCTZ) ceramics. These samples are fabricated by the solid state combustion technique using glycine as fuel. The powders and ceramics are calcined and sintered at 1050 and 1450 C, respectively, for 2 h. The coexistence of the orthorhombic and tetragonal phases is observed in all samples. Increasing the amount of CuO doping enhances orthorhombicity, as verified by the Rietveld refinement technique. The orthorhombic and tetragonal phases are close to equal in the 0.4 wt% CuO doped sample. The grain size continuously increases as more CuO is added up to 0.4 wt% and then the size decreases due to the accumulation of excessive CuO at the grain boundaries. The density, dielectric constant, and ferroelectric properties tend to be enhanced when the CuO doping increase from 0 to 0.4 wt%, then they start to degrade. By increasing the CuO concentration from 0 to 0.8 wt%, the ceramics exhibit diamagnetic behavior. A ferromagnetic hysteresis loop is observed in the ceramic with 1.0 wt% CuO doping when measured at a temperature of 50 K.

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“…Li, Lin, and Chen et al . investigated the effects of element doping on the phase structure, dielectric and piezoelectric properties of BCZT ceramics . The varied piezoelectric parameters reported via such approaches indicate that, however, further studies on the fabrication technique as well as its influence on the electrical behavior of the resultant BCTZ ceramics are still necessary.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1)O₃ ceramics and their multilayer piezoelectric actuators

Long

2016

Int J Applied Ceramic Tech

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The lead‐free ceramics with nominal composition (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 (BCTZ) were prepared by a conventional solid‐state reaction combined with a liquid precursor mixing method. Structural, dielectric, piezoelectric, and ferroelectric properties of the ceramics were systematically investigated. Excellent electrical properties of Tc ~ 101°C, tanδ ~ (0.003–0.05), kp ~ 0.46, d33 ~ 560 pC/N, Ps ~17 μC/cm2 and a large strain of 0.43% were reproducibly obtained for the BCTZ ceramics. In addition, BCTZ‐based monolithic multilayer piezoelectric actuators were successfully fabricated by alternately laminating the claimed piezoelectric ceramics and internal‐binder. The actuators show large displacements under low driven voltage. These results highlight that the BCTZ ceramics are excellent candidate for multilayer piezoelectric devices.

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Phase transition, ferroelectric and piezoelectric properties of Ba1−xCaxTi1−yZryO3 lead-free ceramics

Cited by 25 publications

References 25 publications

Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

Phase Ratio, Dielectric, Ferroelectric, and Magnetic Properties of BCTZ Ceramics with CuO Doping Synthesized by the Solid State Combustion Technique

Fabrication and properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1)O₃ ceramics and their multilayer piezoelectric actuators

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Phase transition, ferroelectric and piezoelectric properties of Ba1−xCaxTi1−yZryO3 lead-free ceramics

Cited by 25 publications

References 25 publications

Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

Structure and electrical properties of IrO2-doped 0.5Ba0.7Ca0.3TiO3–0.5BaTi0.8Zr0.2O3 ceramics via low-temperature sintering

Phase Ratio, Dielectric, Ferroelectric, and Magnetic Properties of BCTZ Ceramics with CuO Doping Synthesized by the Solid State Combustion Technique

Fabrication and properties of (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 ceramics and their multilayer piezoelectric actuators

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Fabrication and properties of (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1)O₃ ceramics and their multilayer piezoelectric actuators