Effect of rare earth ion doping on the structural, microstructural and diffused phase transition characteristics of BaBi 2 Nb 2 O 9 relaxor ferroelectrics

Kannan, Balaji; Venkataraman, B.

doi:10.1016/j.ceramint.2014.07.076

Cited by 24 publications

(7 citation statements)

References 17 publications

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“…This phenomenon arises due to the anisotropic nature of the crystal structure. 33,34 The micrographs also reveal well-defined grains and grain boundaries with strong packing, confirming the highly dense structure of the prepared SBBNX ceramics. The average grain size, estimated using Image J software, is shown in Fig.…”

Section: Resultssupporting

confidence: 60%

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Singh,

Gautam,

Luthra

et al. 2023

ECS J. Solid State Sci. Technol.

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In this study, the authors focused on the preparation and characterization of Lead-free ferroelectric ceramics known as Sr1−XBi2+2X/3Nb2O9: SBBNX, where 0.0≤ × ≤0.4. The ceramics were synthesized using a conventional solid-state reaction route. The researchers performed X-ray diffraction (XRD) analysis to confirm the phase formation and employed the Rietveld refinement technique. The results indicated that the prepared SBBNX ceramics exhibited a single phase with an orthorhombic structure, specifically belonging to the A21am space group. All samples were subjected to analysis using field emission scanning electron microscopy (FESEM) to investigate their surface morphology. The micrographs revealed a uniform distribution of grains (of size 2–4 μm ) on the surface, with distinct grain boundaries. An increasing trend in both the dielectric constant (from 99 to 220 at room temperature) and transition temperature (from 396 °C to 490 °C) was noted with an increase of Bi content in SBN. The researchers estimated the activation energies by analyzing the Arrhenius plots of the ac conductivity. The obtained values ranged from 0.62 to 1.25 eV, indicating the presence of motion of oxygen vacancies in the SBBNX ceramics. The primary objective of this study was to optimize the Sr/Bi ratio in SBBNX ceramics to enhance their potential use in non-volatile random access memory (NVRAM) applications and high-temperature piezoelectric devices.

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Section: Resultssupporting

confidence: 60%

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Singh,

Gautam,

Luthra

et al. 2023

ECS J. Solid State Sci. Technol.

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“…The change of the diffuseness exponent c symbolizes the variations on the dielectric relaxor behavior of CBT-BIT-xLa and the diffuse phase transition in the structure. In general, the relaxor behavior is closely related to the cationic disordering caused by the different kinds of cations on the same crystallographic site [14,[17][18][19][20]. With the content of La 3?…”

Section: Resultsmentioning

confidence: 99%

Effects of La3+ substitution on structure and temperature dependence of electrical properties of CaBi4Ti4O15–Bi4Ti3O12 ceramics

Fei

Zhou

Hui

et al. 2015

J Mater Sci: Mater Electron

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Structure and temperature dependence of electrical properties of Ca(Bi,La) 4 Ti 4 O 15 -(Bi,La) 4 Ti 3 O 12 (CBT-BIT-xLa) ceramics were studied. With La 3? doping content increasing, the samples exhibited diffused dielectric constant anomalies, and the Curie temperature (T c ) decreased. Meanwhile, the dielectric loss of CBT-BITxLa was reduced. CBT-BIT-0.8La performed an improved piezoelectric constant (d 33 ) value of 23.4 pC/N and remained until the temperature increased to 500°C. In addition, CBT-BIT-0.8La performed an enhanced q dc value of 3.26 9 10 15 X cm, at room temperature. CBT-BIT-0.8La showed clearly higher dc resistivity (q dc ) than CBT-BIT, even with increasing the temperature to 600°C.

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“…The scanning electron micrographs of BBN and BBSmN ceramics revealed the presence of more or less tightly packed equiaxed plate shaped morphological grains. However, the detailed analyses on the structural and microstructural studies of these ceramics were already discussed in our earlier report [19].…”

Section: Structural and Microstructural Studiesmentioning

confidence: 97%

Dielectric relaxor and conductivity characteristics of undoped and samarium doped barium bismuth niobate ferroelectric ceramics

Kannan

Venkataraman

2015

Ferroelectrics Letters Section

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Effect of rare earth ion doping on the structural, microstructural and diffused phase transition characteristics of BaBi 2 Nb 2 O 9 relaxor ferroelectrics

Cited by 24 publications

References 17 publications

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Effects of La3+ substitution on structure and temperature dependence of electrical properties of CaBi4Ti4O15–Bi4Ti3O12 ceramics

Dielectric relaxor and conductivity characteristics of undoped and samarium doped barium bismuth niobate ferroelectric ceramics

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Effect of rare earth ion doping on the structural, microstructural and diffused phase transition characteristics of BaBi 2 Nb 2 O 9 relaxor ferroelectrics

Cited by 24 publications

References 17 publications

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr1−XBi2+2X/3Nb2O9 Ceramics

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr1−XBi2+2X/3Nb2O9 Ceramics

Effects of La3+ substitution on structure and temperature dependence of electrical properties of CaBi4Ti4O15–Bi4Ti3O12 ceramics

Dielectric relaxor and conductivity characteristics of undoped and samarium doped barium bismuth niobate ferroelectric ceramics

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Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics

Exploration of the Structural, Dielectric, Ferroelectric, and Piezoelectric Properties in Non-stoichiometric Sr_1−XBi_2+2X/3Nb₂O₉ Ceramics