Microstructure, electrical properties, strain and temperature stability of (K, Na, Li)(Nb, Ta)O3 ceramics: The effect of BiFeO3 additive

Chao, Xiaolian; Wang, Juanjuan; Kang, Chao; Li, Zhao; Yang, Zupei

doi:10.1016/j.ceramint.2015.06.127

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…In typical dielectric materials, the relationships between phase transition, the dielectric permittivity and temperature obeyed the following Curie–Weiss law [ 25 ],

where, T is the testing temperature, T C is the actual Curie temperature, T CW is the theoretical fit Curie temperature, Δ T is the difference between T CW and T C , ε is the permittivity and ε m is the maximum permittivity. The term C is a Curie–Weiss constant, and the magnitude of C is approximately 10 4 .…”

Section: Resultsmentioning

confidence: 99%

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Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics

Chen

Meng

et al. 2020

R. Soc. Open Sci.

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A sol–gel method is employed for preparing high quality lead-free glass-ceramic samples (1 − x )BCZT- x BBS—incorporating Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 (BCZT) powder and Bi 2 O 3 -B 2 O 3 -SiO 2 (BBS) glass-doped additives with different values of x ( x = 0, 0.05, 0.1, 0.15). Systematic investigations are performed to comprehend the structural, dielectric and energy storage characteristics using X-ray diffraction, field-emission scanning electron microscopy, impedance and ferroelectric analyser methods. With appropriate BBS doping ( x ), many fundamental traits including breakdown strength, dielectric loss and energy storage density have shown significant improvements. Low doping-level samples x < 0.1 have retained the pure perovskite phase while a second glass phase appeared in samples with x ≥ 0.1. As the doping level (0.1 ≥ x > 0) is increased, the average grain size decreased to become better homogeneous materials with improved breakdown energy strengths. Excessive addition of BBS ( x = 0.15) causes negative effects on microstructures and other traits. The glass-ceramic sample 0.95BCZT-0.05BBS exhibits excellent dielectric permittivity and temperature stability, with the highest energy storage density of 0.3907 J cm −3 at 130 kV cm −1 . These results provide good reference to develop lead-free ceramics of high energy storage density.

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“…In typical dielectric materials, the relationships between phase transition, the dielectric permittivity and temperature obeyed the following Curie–Weiss law [ 25 ],

Section: Resultsmentioning

confidence: 99%

“…The fitting results of the temperature dependence of dielectric content are shown in figure 6 . The (1 − x )BCZT- x BBS ceramics exhibit a wide phase transition peak from cubic phase to ferroelectric tetragonal phase [ 25 , 26 ]. The peak width is broadened, which may be due to the disorder in the microstructure [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics

Chen

Meng

et al. 2020

R. Soc. Open Sci.

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“…The solid-state reaction assisted by microwave heating has led to the production of KNN systems at lower temperatures than conventional methods without the presence of secondary phases [ 23 ]. It can be expected that improving microwave heating by using single-mode systems instead of multi-mode systems will open up the options for this technology [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Microwave-Assisted Synthesis and Sintering of Lead-Free KNL-NTS Ceramics

Lagunas-Chavarría

Navarro-Rojero²,

Salvador

et al. 2022

Materials

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Lead-free piezoelectric powders (K0.44Na0.52Li0.04)(Nb0.82Ta0.10Sb0.04)O3 were obtained by conventional and microwave-assisted reactive heating. Firstly, the synthesis of the material was carried out following the mixed oxide route and employing both traditional methods and microwave technology. Thermogravimetry, X-ray diffraction, field emission scanning electron microscopy and electrical properties analyses were evaluated. X-ray diffraction of the powders calcined by the microwave process shows the formation of perovskite structure with orthorhombic geometry, but it is possible to observe the presence of other phases. The presence of the secondary phases found can have a great influence on the heating rate during the synthesis on which the kinetics of the reaction of formation of the piezoelectric compound depend. The calcined powder was sintered at different temperatures by conventional and non-conventional processes. The microstructure of the ceramics sintered by microwave at 1050 °C for 10 min shows perovskite cubes with regular geometry, of size close to 2–5 µm. However, the observed porosity (~8%), the presence of liquid phase and secondary phases in the microstructure of the microwave sintered materials lead to a decrease of the piezoelectric constant. The highest d33 value of 146 pC/N was obtained for samples obtained by conventional at 1100 °C 2 h compared to samples sintered by microwave at 1050 °C 10 min (~15 pC/N).

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Structural, optical and magnetic behaviour of cobalt- and ferrous-doped zinc stannate nanoparticles synthesized by hydrothermal method

Joseph¹,

Ragu²,

Akilan³

et al. 2019

Appl. Phys. A

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Microstructure, electrical properties, strain and temperature stability of (K, Na, Li)(Nb, Ta)O3 ceramics: The effect of BiFeO3 additive

Cited by 13 publications

References 31 publications

Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics

Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics

Effect of Microwave-Assisted Synthesis and Sintering of Lead-Free KNL-NTS Ceramics

Structural, optical and magnetic behaviour of cobalt- and ferrous-doped zinc stannate nanoparticles synthesized by hydrothermal method

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Microstructure, electrical properties, strain and temperature stability of (K, Na, Li)(Nb, Ta)O3 ceramics: The effect of BiFeO3 additive

Cited by 13 publications

References 31 publications

Dielectric and energy storage properties of Bi 2 O 3 -B 2 O 3 -SiO 2 doped Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 lead-free glass-ceramics

Dielectric and energy storage properties of Bi 2 O 3 -B 2 O 3 -SiO 2 doped Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 lead-free glass-ceramics

Effect of Microwave-Assisted Synthesis and Sintering of Lead-Free KNL-NTS Ceramics

Structural, optical and magnetic behaviour of cobalt- and ferrous-doped zinc stannate nanoparticles synthesized by hydrothermal method

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Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics

Dielectric and energy storage properties of Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ doped Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃ lead-free glass-ceramics