Relaxor dielectric behavior in BaTiO3 substituted BiFeO3–PbTiO3 multiferroic system

Kumar, Naveen; Narayan, Bastola; Kumar, Sanjeev; Ranjan, Rajeev

doi:10.1007/s10854-017-6813-x

Cited by 8 publications

(5 citation statements)

References 35 publications

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“…The best fit, as evidenced by the Bragg reflection profile of (111) PC for identifying the signature of tetragonal phase reflection shown in inset of Figure a, was obtained for the phase model ( Cc + P 4 mm ). The refined lattice parameters and atomic positions are provided in the Table , were in good agreement with existing literature . Figure b displays the surface morphology of NBNT‐BT 92 / 8 ceramic confirming the uniform distribution of Nd.…”

Section: Resultssupporting

confidence: 84%

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Kandula¹,

Banerjee²,

Raavi³

et al. 2018

Physica Status Solidi (a)

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Eco‐friendly 0.92(Na0.5Bi0.49Nd0.01TiO3)‐0.08(BaTiO3) [denoted as NBNT‐BT 92/8] ceramic is synthesized with the help of conventional solid state reaction route. The structural phase pure studies reveals, the compound stabilizes into mixed phase of Cc + P4 mm and the surface morphology of microstructure shows the uniform distribution of Nd. The temperature dependent dielectric study reveals two typical anomalies with the diffuse phase transition and show the relaxor future estimated with the help of diffusivity (γ). From the temperature dependent polarization and room temperature bipolar strain hysteresis loops over broad electrical field range from (0–73) kV cm−1, the estimated energy storage density, energy storage efficiency, and strain values are Wrec ≈ 1.53J cm−3, η ≈ 93(%), and S(%) ≈ 0.4, respectively, which is the best obtained value among available various reported lead‐free piezoelectric ceramics. The adiabatic or electrocaloric temperature change (ΔT) is calculated to be ΔT ≈ 0.95 K at 50 kV cm−1. The obtained valued of ΔT, strain and energy storage density for NBNT‐BT 92/8 is tremendous enhancement compared with absence of Nd in NBT‐BT 92/8.

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Section: Resultssupporting

confidence: 84%

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Kandula¹,

Banerjee²,

Raavi³

et al. 2018

Physica Status Solidi (a)

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“…The comparison of d 33 versus T C values for other high Curie temperature ceramics reported previously is shown in Figure 8 6,7,23‐36,53‐59 . In terms of BF‐PT‐based piezoelectric ceramics, high d 33 was recently achieved by the addition of ABO 3 compound or substitutional doping with the rare‐earth elements.…”

Section: Resultsmentioning

confidence: 88%

“…In other words, the enhancement of piezoelectric performance is achieved in detriment of a high structural distortion (high T C ). Even so, a novel BF‐PT‐based ternary system was designed with a high piezoelectric coefficient while retaining high Curie temperature, compared to other reported systems 23‐36 …”

Section: Resultsmentioning

confidence: 99%

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Large piezoelectricity and high Curie temperature in novel bismuth ferrite‐based ferroelectric ceramics

Zeng

Zheng

et al. 2020

J Am Ceram Soc

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The requirement for ferroelectric ceramics with a high Curie temperature and a high piezoelectric coefficient remains an important research task for high‐temperature sensors and actuators applications. (0.76‐x)BiFeO3‐0.24PbTiO3‐xBa(Sn0.2Ti0.8)O3 (BF‐PT‐BST) piezoelectric ceramics were fabricated using the solid‐state reaction method. XRD analysis indicated that the incorporation of large ionic radius Ba2+ at A‐site and nonferroelectric‐active Sn4+ at B‐site generated a decrease in the tetragonality degree c/a. A wide multiphase coexistence region was formed with the content of BST ranging from 0.13 to 0.28. The enhanced piezoelectric coefficient (d33 ~ 200pC/N) was achieved while maintaining a high Curie temperature (TC ~ 500°C) and a high depolarization temperature (Td ~ 450°C) for the composition of 0.6BF‐24PT‐0.16BST. TEM patterns provided clear evidence for the presence of nanodomains (~2nm) would be the predominant source for the enhanced piezoelectricity for the composition x = 0.20. The designed BF‐PT‐BST ternary system provides great potential for high‐temperature piezoelectric applications.

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“…Most recently, the piezoelectric, ferroelectric, and ferromagnetic properties of BiFeO 3 ‐based solid solutions have been greatly improved, by using the cation modifications 8‐18 and forming the ternary system 19‐25 . Table 1 summarizes the piezoelectric, ferroelectric, and ferromagnetic properties of BiFeO 3 ‐based solid solutions.…”

Section: Introductionmentioning

confidence: 99%

Enhanced ferroelectric and ferromagnetic properties of BiFeO₃‐PbTiO₃ multiferroic solid solutions with Ba substitutions

Peng

Jian

et al. 2020

J Am Ceram Soc

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Dense 0.6(Bi0.9La0.1)(Ga0.05Fe0.95)O3‐0.4(Pb1‐xBax)TiO3 (BLGF‐PBT, x = 0, 0.1, 0.2, 0.3, and 0.4) ceramics with different Ba contents were prepared by the solid‐state reaction method, and effects of Ba contents on the structure and multiferroic properties were investigated. X‐ray diffraction results indicate that the Ba‐modified BLGF‐PBT ceramics exhibit single perovskite structure without detectable secondary phases, and a transition from tetragonal phase to rhombohedral one takes place with the increase of Ba content. The piezoelectric constant d33, remanent polarization Pr, and remanent magnetization Mr are improved by the Ba substitution simultaneously. Values of Pr, Mr, and d33 of BLGF‐PBT ceramics for the composition of x = 0.3 with the coexistence of tetragonal and rhombohedral phases are 20 μC/cm2, 0.05 emu/g, and 256 pC/N, respectively, much higher than those without Ba modification. The significantly improved d33 and Mr indicate that BLGF‐PBT ceramics with Ba modification provide alternative materials for multifunctional devices.

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Relaxor dielectric behavior in BaTiO3 substituted BiFeO3–PbTiO3 multiferroic system

Cited by 8 publications

References 35 publications

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Large piezoelectricity and high Curie temperature in novel bismuth ferrite‐based ferroelectric ceramics

Enhanced ferroelectric and ferromagnetic properties of BiFeO₃‐PbTiO₃ multiferroic solid solutions with Ba substitutions

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Relaxor dielectric behavior in BaTiO3 substituted BiFeO3–PbTiO3 multiferroic system

Cited by 8 publications

References 35 publications

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Enhanced Electrocaloric Effect and Energy Storage Density of Nd‐Substituted 0.92NBT‐0.08BT Lead Free Ceramic

Large piezoelectricity and high Curie temperature in novel bismuth ferrite‐based ferroelectric ceramics

Enhanced ferroelectric and ferromagnetic properties of BiFeO3‐PbTiO3 multiferroic solid solutions with Ba substitutions

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Enhanced ferroelectric and ferromagnetic properties of BiFeO₃‐PbTiO₃ multiferroic solid solutions with Ba substitutions