Grain size effect on electrical properties of Mn-modified 0.67BiFeO3–0.33BaTiO3 lead-free piezoelectric ceramics

Sudo, Yui; Hagiwara, Manabu; Fujihara, Shinobu

doi:10.1016/j.ceramint.2016.02.030

Cited by 38 publications

(23 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, they increased for the ceramics sintered for 24, 50, and 100 hours over the ceramic sintered for 15 hours. An increase in a dielectric constant at a phase transition temperature by an increase in grain size was reported for other ferroelectric materials . On cooling, only the dielectric constant peak at the Curie temperature was observed, and the shoulder associated with the rhombohedral to tetragonal phase transition disappeared.…”

Section: Resultssupporting

confidence: 56%

See 1 more Smart Citation

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique

2018

View full text Add to dashboard Cite

0.24Pb(In1/2Nb1/2)O3‐0.42Pb(Mg1/3Nb2/3)O3‐0.34PbTiO3 transparent ceramics were fabricated by a conventional sintering technique. Through optimization of sintering conditions of calcination and sintering temperatures and time, the obtained ceramics showed high optical transmittance of 53% and 71% at light wavelengths of 1300 and 2000 nm, respectively. The ceramics showed a rhombohedral to tetragonal phase transition at ~120°C and a tetragonal to cubic phase transition at 222°C. These transition temperatures were higher than those of 0.67Pb(Mg1/3Nb2/3)‐0.33PbTiO3 ceramics. In addition, the ceramics had a ferroelectric hysteresis loop, a large piezoelectric constant d33 of 407 pC/N, and a planar electromechanical coupling factor kp of 52%. These results suggest that the transparent ceramics may be used as a temperature‐stable, linear electro‐optic material.

show abstract

Section: Resultssupporting

confidence: 56%

“…Strong dependence of the grain size on the loops was not observed. For other ferroelectric materials, weak dependence of the grain size on P ‐ E loops was reported . The piezoelectric properties were characterized for samples poled at a dc electric field of 20 kV/cm for 5 minutes at 100°C in an oil bath.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique

2018

View full text Add to dashboard Cite

show abstract

“…The main reason for this phenomenon attributes to its polycrystalline structure and small grain size. Grain boundaries would significantly reduce the piezoelectric properties by obstructing domain wall movement under an external electric field and lowering the effective electric field on each grain 29 . Design and structure of the IENG.…”

Section: Resultsmentioning

confidence: 99%

Enhancing the current density of a piezoelectric nanogenerator using a three-dimensional intercalation electrode

et al. 2020

View full text Add to dashboard Cite

The low output current density of piezoelectric nanogenerators (PENGs) severely restricts their application for ambient mechanical energy harvest. This has been a key challenge in the development of PENG. Here, to conquer this, based on a piezoelectric material with high piezoelectric coefficient (Sm-PMN-PT), a new design of PENG with a three-dimensional intercalation electrode (IENG) is proposed. By creating many boundary interfaces inside the piezoelectric material, the total amount of surface polarization charges increased, which contributes to an increased current density. The IENG can output a maximum peak shortcircuit current of 320 μA, and the corresponding current density 290 μA cm −2 is 1.93 and 1.61 times the record values of PENG and triboelectric nanogenerator (TENG), respectively. It can also charge a 1 μF capacitor from 0 V to 8 V in 21 cycles, and the equivalent surface charge density 1690 μC m −2 is 1.35 times the record value of TENG.

show abstract

“…For BiFeO 3 -based ceramics, it was reported that the remanent polarization and piezoelectric d 33 coefficient decreased when the grain size was below 2¯m. 11), 20) In addition, the larger remanent polarization was partly attributed the leakage current of the sample, since the shape of the PE loop was slightly round.…”

Section: Ferroelectric and Piezoelectric Propertiesmentioning

confidence: 99%

Effect of oxygen partial pressure during sintering on electric properties of BiFeO<sub>3</sub>-based piezoelectric ceramics

Aizawa

Fujii

Ueno

et al. 2019

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

The effects of oxygen partial pressure (pO 2) during sintering and post-annealing treatment on the microstructure and electrical properties of Mn-added 0.3BaTiO 3 0.1Bi(Mg 1/2 Ti 1/2)O 3 0.6BiFeO 3 ceramics were investigated. The ceramics sintered at pO 2 of 0.11 atm showed pinched polarizationelectric field (PE) loops, while the ceramics sintered in nitrogen gas could not be measured due to dielectric breakdown. By annealed at 800°C for 5 h and cooled slowly, the ceramics showed increased remanent polarizations although their PE loops were still pinched. When the as-sintered ceramics were annealed at 800°C for 5 h and then quenched into water, welldeveloped ferroelectric hysteresis loops were observed. These results were discussed with grain size and defect dipoles consisted of oxygen vacancies and bismuth vacancies or iron ions with a different valence.

show abstract

Grain size effect on electrical properties of Mn-modified 0.67BiFeO3–0.33BaTiO3 lead-free piezoelectric ceramics

Cited by 38 publications

References 28 publications

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique

Enhancing the current density of a piezoelectric nanogenerator using a three-dimensional intercalation electrode

Effect of oxygen partial pressure during sintering on electric properties of BiFeO<sub>3</sub>-based piezoelectric ceramics

Contact Info

Product

Resources

About

Grain size effect on electrical properties of Mn-modified 0.67BiFeO3–0.33BaTiO3 lead-free piezoelectric ceramics

Cited by 38 publications

References 28 publications

Fabrication of 0.24Pb(In1/2Nb1/2)O3‐0.42Pb(Mg1/3Nb2/3)O3‐0.34PbTiO3 transparent ceramics by conventional sintering technique

Fabrication of 0.24Pb(In1/2Nb1/2)O3‐0.42Pb(Mg1/3Nb2/3)O3‐0.34PbTiO3 transparent ceramics by conventional sintering technique

Enhancing the current density of a piezoelectric nanogenerator using a three-dimensional intercalation electrode

Effect of oxygen partial pressure during sintering on electric properties of BiFeO<sub>3</sub>-based piezoelectric ceramics

Contact Info

Product

Resources

About

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique

Fabrication of 0.24Pb(In_1/2Nb_1/2)O₃‐0.42Pb(Mg_1/3Nb_2/3)O₃‐0.34PbTiO₃ transparent ceramics by conventional sintering technique