Enhanced piezoelectric properties of Bi(Mg1/2Ti1/2)O3 modified BiFeO3–BaTiO3 ceramics near the morphotropic phase boundary

Zhu, Lifeng; Zhang, Bo‐Ping; Li, Shun; Zhao, Lei; Wang, Ning; Shi, Xin-Chao

doi:10.1016/j.jallcom.2016.01.003

Cited by 78 publications

(23 citation statements)

References 32 publications

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“…When x ≥ 0.32, the phase structure converted to pseudocubic phase. The rhombohedral and the pseudocube phase coexist when x is around 0.3, the existence of MPB in 0.7BF-0.3BT-BZT sample [25,27,37]. ceramics is relatively larger.…”

Section: Resultsmentioning

confidence: 95%

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

Sun

Yang

Guan

et al. 2021

J Mater Sci: Mater Electron

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The structure, microstructure, piezoelectric properties, ferroelectric properties and Curie temperature of (1x )BiFeO 3 -x BaTiO 3 -Bi(Zn 0.5 Ti 0.5 )O 3 +MnO 2 +Li 2 CO 3 ceramics were investigated experimentally by improved solid-state reaction approach. The crystalline structures were examined by X-ray diffractometry. When x = 0.3, the rhombohedral and pseudocubic phases coexist in the ceramic structure. It is considered that the morphotropic phase boundary was formed here. At the same time, the piezoelectric performance d 33 , Curie temperature T C , and depolarization temperature are as high as 184 pC/N, 550°C, 530°C at x = 0.3, respectively. It is worth noting that when x = 0.24, the ceramics have a high T C = 580°C and low dielectric loss tan δ = 1.9%. These results show that the BFBT-BZT system ceramics are applicable ceramics with high piezoelectric properties in high temperature elds.

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Section: Resultsmentioning

confidence: 95%

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

Sun

Yang

Guan

et al. 2021

J Mater Sci: Mater Electron

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“…Dopants in the field of piezoelectric materials are classified into three groups; donor (higher valence), acceptor (lower valence) and self‐compensated (average valence number remains the same). All the above‐mentioned dopant strategies improve the resistivity of BT‐BF ceramics as reported in the literature . Wang et al reported that Nb (donor) improves the resistivity of BT‐BF while it gives rise to a decrease in the grain size.…”

Section: Introductionmentioning

confidence: 89%

“…For instance, as Yao et al reported, Mn increases the resistivity and decreases the dielectric loss of 0.8BF‐0.2BT ceramics. However, the most successful dopants are stoichiometric or self‐compensated (e.g., Cr, Co, Al, Ga, Mg 1/2 Ti 1/2 , Zn 1/2 Ti 1/2 , and Ni 1/2 Ti 1/2 ) which improve not only the resistivity of furnace cooled ceramics but also their piezoelectric properties . Nonetheless, the d 33 of furnace‐cooled doped BF‐BT compositions is typically much smaller (163 pC/N) than that of quenched samples …”

Section: Introductionmentioning

confidence: 99%

High strain (0.4%) Bi(Mg_2/3Nb_1/3)O₃‐BaTiO₃‐BiFeO₃ lead‐free piezoelectric ceramics and multilayers

et al. 2018

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The relationship between the piezoelectric properties and the structure/microstructure for 0.05Bi(Mg2/3Nb1/3)O3‐(0.95‐x)BaTiO3‐xBiFeO3 (BBFT, x = 0.55, 0.60, 0.63, 0.65, 0.70, and 0.75) ceramics has been investigated. Scanning electron microscopy revealed a homogeneous microstructure for x < 0.75 but there was evidence of a core‐shell cation distribution for x = 0.75 which could be suppressed in part through quenching from the sintering temperature. X‐ray diffraction (XRD) suggested a gradual structural transition from pseudocubic to rhombohedral for 0.63 < x < 0.70, characterized by the coexistence of phases. The temperature dependence of relative permittivity, polarization‐electric field hysteresis loops, bipolar strain‐electric field curves revealed that BBFT transformed from relaxor‐like to ferroelectric behavior with an increase in x, consistent with changes in the phase assemblage and domain structure. The largest strain was 0.41% for x = 0.63 at 10 kV/mm. The largest effective piezoelectric coefficient (d33*) was 544 pm/V for x = 0.63 at 5 kV/mm but the largest Berlincourt d33 (148 pC/N) was obtained for x = 0.70. We propose that d33* is optimized at the point of crossover from relaxor to ferroelectric which facilitates a macroscopic field induced transition to a ferroelectric state but that d33 is optimized in the ferroelectric, rhombohedral phase. Unipolar strain was measured as a function of temperature for x = 0.63 with strains of 0.30% achieved at 175°C, accompanied by a significant decrease in hysteresis with respect to room temperature measurements. The potential for BBFT compositions to be used as high strain actuators is demonstrated by the fabrication of a prototype multilayer which achieved 3 μm displacement at 150°C.

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“…It is a real challenge to convince the industry that water‐quenched BF‐BT ceramics are mechanically dependable. On the other hand, adding the third number (SrZrO 3 , Bi(Zn 0.5 Ti 0.5 )O 3 , Bi(Mg 1/2 Ti 1/2 )O 3 and so on) into BF and ion substitution for Fe 3+ and/or Bi 3+ by Sc 3+ , Sm 3+ or Dy 3+ have been tried to enhance the insulating property in BF‐BT ceramics . But there were few reports that relate to the addition of the third number into BT to enhance the insulating property in BF‐BT ceramics.…”

Section: Introductionmentioning

confidence: 99%

Enhanced insulating and piezoelectric properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ ceramics with high Curie temperature

et al. 2019

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BiFeO3‐BaTiO3 ceramics are promising lead‐free piezoelectric ceramics due to their high piezoelectric properties and high Curie temperature, but their high leakage current density makes the poling difficult. In this study, a decreased leakage current density by three orders of magnitude was obtained in Bi0.5Na0.5TiO3 (BNT) added 0.67BiFeO3‐0.33BaTiO3 (BF‐BT) ceramics. It was found that the largely improved insulating properties benefit from the reduced oxygen vacancies and weak reduction of Fe3+ to Fe2+ as confirmed by photoluminescence and X‐ray photoelectron spectroscopy measurements, thereby contributing to high‐temperature and high‐field poling. In addition, the introduction of BNT leaded to increased grain size. Due to the grown grains as well as reduced oxygen vacancies and Fe2+, enhanced insulating and optimal piezoelectric properties with Pr = 24.2 µC/cm2, d33 = 183 pC/N, kp = 0.28, and TC = 467°C were achieved in BF‐BT‐0.05BNT ceramics.

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Enhanced piezoelectric properties of Bi(Mg1/2Ti1/2)O3 modified BiFeO3–BaTiO3 ceramics near the morphotropic phase boundary

Cited by 78 publications

References 32 publications

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

High strain (0.4%) Bi(Mg_2/3Nb_1/3)O₃‐BaTiO₃‐BiFeO₃ lead‐free piezoelectric ceramics and multilayers

Enhanced insulating and piezoelectric properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ ceramics with high Curie temperature

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Enhanced piezoelectric properties of Bi(Mg1/2Ti1/2)O3 modified BiFeO3–BaTiO3 ceramics near the morphotropic phase boundary

Cited by 78 publications

References 32 publications

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

The (1 − x)BiFeO3–xBaTiO3–Bi(Zn0.5Ti0.5)O3 high-temperature lead-free piezoelectric ceramics with strong piezoelectric properties

High strain (0.4%) Bi(Mg2/3Nb1/3)O3‐BaTiO3‐BiFeO3 lead‐free piezoelectric ceramics and multilayers

Enhanced insulating and piezoelectric properties of BiFeO3‐BaTiO3‐Bi0.5Na0.5TiO3 ceramics with high Curie temperature

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High strain (0.4%) Bi(Mg_2/3Nb_1/3)O₃‐BaTiO₃‐BiFeO₃ lead‐free piezoelectric ceramics and multilayers

Enhanced insulating and piezoelectric properties of BiFeO₃‐BaTiO₃‐Bi_0.5Na_0.5TiO₃ ceramics with high Curie temperature