Structure and electrical properties of 0.85(Bi0.5Na0.5)TiO3–0.12BaTiO3–0.03SrTiO3 ferroelectric ceramics

Mgbemere, Henry E.; Fernandes, Rita; Schneider, Gerold A.

doi:10.1016/j.jeurceramsoc.2013.04.036

Cited by 13 publications

(6 citation statements)

References 35 publications

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“…The compositions with x < 0.02 have well‐shaped P–E loops, whereas the one with x = 0.02 has a “slim” loop, so there is an abrupt decrease of the saturated polarization ( P s ) and remnant polarization ( P r ) around x = 0.02. The P s and P r values of pure BNT‐6BT are comparable with what reported in the literatures . On the other hand, the J–E curves of the samples with compositions x < 0.01 have two peaks corresponding to the coercive field, resulted from polarization rotation, typically as shown in Fig.…”

Section: Resultssupporting

confidence: 89%

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Pan

Dai

et al. 2014

J. Am. Ceram. Soc.

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Er-doped 0.94Bi 0.5 Na 0.5 TiO 3 -0.06BaTiO 3 (BNT-6BT: xEr, x is the molar ratio of Er 3+ doping) lead-free piezoceramics with x = 0-0.02 were prepared and their multifunctional properties have been comprehensively investigated. Our results show that Er-doping has significant effects on morphology of grain, photoluminescence, dielectric, and ferroelectric properties of the ceramics. At room temperature, the green (550 nm) and red (670 nm) emissions are enhanced by Er-doping, reaching the strongest emission intensity when x = 0.0075. The complex and composition-dependent effects of electric poling on photoluminescence also have been measured. As for electrical properties, on the one hand, Er-doping tends to flatten the dielectric constant-temperature (e r -T) curves, leading to temperature-insensitive dielectric constant in a wide temperature range (50°C-300°C). On the other hand, Er-doping significantly decreases the ferroelectric-relaxor transition temperature (T F-R ) and depolarization temperature (T d ), with the T F-R decreasing from 76°C to 42°C for x = 0-0.02. As a result, significant composition-dependent electrical features were found in ferroelectric and piezoelectric properties at room temperature. In general, piezoelectric and ferroelectric properties tend to become weaker, as confirmed by the composition-dependent piezoelectric coefficient (d 33 ), planar coupling factor (k p ), and the shape of polarization-electric field (P-E), current-electric field (J-E), bipolar/unipolar strain-electric field (S-E) curves. Furthermore, to understand the relationship between the T F-R /T d and the electrical properties, the composition of x = 0.0075 has been intensively studied. Our results indicate that the BNT-6BT: xEr with appropriate Er-doping may be a promising multifunctional material with integrated photoluminescence and electrical properties for practical applications.

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Section: Resultssupporting

confidence: 89%

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Pan

Dai

et al. 2014

J. Am. Ceram. Soc.

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“…16 Despite the amount of work performed on the core-shell microstructure, other works on NBT-ST or related materials presented no evidence of a core-shell structure, [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] or it was proposed that no core-shell structure forms. 34,35 The electrical properties of the NBT-ST compounds also differ, despite similar synthesis parameters. 14 This demonstrates that there is key knowledge missing in the literature, which affects the experimental reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Designing properties of (Na_1/2Bi_x)TiO₃-based materials through A-site non-stoichiometry

et al. 2018

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“…Subsequent studies, have demonstrated that increasing ST content in BNT-based materials leads to destabilization of the long-range ferroelectric state and decreased as well as . 258,275,276,278,354,355 These features can be ascribed to decreased unit cell distortions that culminate at a certain compositional range in a pseudocubic structure. 356 Recent studies highlighted the technological relevance of the system for actuator applications.…”

Section: 2mentioning

confidence: 99%

“…356 Recent studies highlighted the technological relevance of the system for actuator applications. 258,275 Additionally, the BNT-BT-ST 276,278,354,355 , and BNT-(Bi 1/2 K 1/2 )TiO 3 -ST 277 , and BNT-ST-KNN 357 were also introduced in the literature. These systems resemble BNT-ST regarding their electromechanical output, although their response at reduced electric fields is lower.…”

Section: 2mentioning

confidence: 99%

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

Acosta

2016

Springer Theses

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Structure and electrical properties of 0.85(Bi0.5Na0.5)TiO3–0.12BaTiO3–0.03SrTiO3 ferroelectric ceramics

Cited by 13 publications

References 35 publications

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Designing properties of (Na_1/2Bi_x)TiO₃-based materials through A-site non-stoichiometry

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

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Structure and electrical properties of 0.85(Bi0.5Na0.5)TiO3–0.12BaTiO3–0.03SrTiO3 ferroelectric ceramics

Cited by 13 publications

References 35 publications

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi0.5Na0.5TiO3‐0.06BaTiO3 Ceramics

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi0.5Na0.5TiO3‐0.06BaTiO3 Ceramics

Designing properties of (Na1/2Bix)TiO3-based materials through A-site non-stoichiometry

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

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Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Photoluminescence and Temperature Dependent Electrical Properties of Er‐Doped 0.94Bi_0.5Na_0.5TiO₃‐0.06BaTiO₃ Ceramics

Designing properties of (Na_1/2Bi_x)TiO₃-based materials through A-site non-stoichiometry