Temperature stability, structural evolution and dielectric properties of BaTiO3–Bi(Mg2/3Ta1/3)O3 perovskite ceramics

Ma, Dandan; Chen, Xiuli; Huang, Guisheng; Chen, Jie; Zhou, Huanfu; Fang, Liang

doi:10.1016/j.ceramint.2015.02.036

Cited by 64 publications

(28 citation statements)

References 33 publications

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“…The lattice parameters are found to increase along with the BZN concentration. Despite that the radius of Bi 3+ (1.03–1.06 Å) is slightly smaller than Ba 2+ (1.61 Å) of 12‐fold coordination in A‐site, the radii of Zn 2+ (0.74 Å) and Nb 5+ (0.64 Å) cations are larger than that of Ti 4+ (0.605 Å) in B‐site, which demonstrates that the main cause of the lattice expansion is the B‐site substitution of Zn 2+ and Nb 5+ in place of Ti 4+ …”

Section: Resultsmentioning

confidence: 93%

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Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Wang

Shen

et al. 2016

J. Am. Ceram. Soc.

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The (1−x)BaTiO3–xBi(Zn2/3Nb1/3)O3 (x = 0.01–0.30) ceramics were synthesized by solid‐state reactions. The solubility limit was determined to be x = 0.20. A systematic structural transition from a tetragonal phase (x ≤ 0.034), to a mixture of tetragonal and rhombohedral phases (0.038 ≤ x ≤ 0.20), and finally to a pseudocubic phase (x ≥ 0.22) at room temperature was identified. Dielectric measurement revealed a ferroelectric (x ≤ 0.04) to relaxor (x ≥ 0.06) transition with permittivity peak broadening and flattening, which was further verified by Raman spectroscopy and differential scanning calorimetry (DSC). Activation energies obtained from the Vogel–Fulcher model displayed an increasing trend from ~0.03 eV for x ~ 0.05, to unusually high values (>0.20 eV) for the compositions with x ≥ 0.15. With the increase in Bi(Zn2/3Nb1/3)O3 content, the polarization hysteresis demonstrated a tendency from high nonlinearity to sublinearity coupled with the reduction in remnant polarization and coervice field. The deconvolution of the irreversible/reversible polarization contribution was enabled by first‐order reversal curve distributions, which indicates that the decreasing polarization nonlinearity with the increase in Bi(Zn2/3Nb1/3)O3 concentration could be related with the change from the ferroelectric domain and domain wall contributions to the weakly coupled relaxor behaviors.

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Section: Resultsmentioning

confidence: 93%

“…This could possibly indicate an intensified degree of disorder in the system . A transition from ferroelectric long‐range order toward a short‐range order of relaxor‐state is induced with the increase in BZN concentration, which is recognized to be originated from the emergence of polar nanoregions (PNRs) …”

Section: Resultsmentioning

confidence: 99%

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Wang

Shen

et al. 2016

J. Am. Ceram. Soc.

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“…The dielectric properties of the solid solution (1‐ x )BT– x Bi(Mg 0.5 Sn 0.5 )O 3 (BT–BMS) for x =0.1 had ϵ r =2918 with a variation of less than ± 15% across −56 to 248 °C with a low dielectric tanδ < 0.025 across −54 to125 °C, which also showed energy storage of 0.12 J/cm 3 ) and low J loss (0.04 J/cm 3 ) . Ma et al . reported the dielectric properties of (1– x )BT– x Bi(Mg 2/3 Ta 1/3 )O 3 (BT–BMTa) and found a high ϵ r (∼1000‐2000 ± 15%) in a wide temperature range of 30 to 150 °C with low tanδ < 0.02.…”

Section: Introductionmentioning

confidence: 99%

Temperature Stable Dielectric Properties in BaTiO₃–Bi(Mg_2/3Nb_1/3)O₃–NaNbO₃ Solid Solution

et al. 2020

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0.5BaTiO3–(0.5–x)Bi(Mg2/3Nb1/3)O3–xNaNbO3 (x=0.1, 0.2 and 0.3) samples were processed via solid‐state sintering route. Phase identification of the samples showed the formation of a single‐phase cubic perovskite‐structure (space group Pm‐3 m) which was further confirmed using Raman spectroscopy. Microstructural analysis of the samples revealed some voids in the samples while grain size was observed to decrease with increasing NaNbO3 concentration. The addition of NaNbO3 shifted Tm to below room temperature and the stability range of 0.5BaTiO3–0.5Bi(Mg2/3Nb1/3)O3 ceramics was enhanced. The sample with x=0.20 exhibited ϵr(mid) = 400 ±15% stable over a wide temperature range from −85 to 500 °C and most importantly a low dielectric loss of < 0.05 stable across a wide temperature range −100 to 426 °C was maintained. The thermally stable dielectric properties of sample x=0.2 suggests that it could be useful candidate material for capacitor applications in both low (X9R) as well as harsh environment applications.

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“…There are kinds of ceramic solid solution systems which were explored already for high‐temperature stable dielectric ceramics . For example, Zeb et al developed 0.5Ba 0.8 Ca 0.2 TiO 3 ‐0.5BiMg 0.5 Ti 0.5 O 3 (BCT‐BMT) showing prominent dielectric temperature stability in the wide range of 45‐550°C, whereas the relative permittivity is only 800 ± 10%.…”

Section: Introductionmentioning

confidence: 99%

High permittivity (1−x)Bi_1/2Na_1/2TiO₃‐xPbMg_1/3Nb_2/3O₃ ceramics for high‐temperature‐stable capacitors

Chen

Peng

et al. 2018

J Am Ceram Soc

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(1−x)Bi1/2Na1/2TiO3‐xPbMg1/3Nb2/3O3[(1−x)BNT‐xPMN] ceramics have been fabricated via a conventional solid‐state method for compositions x ≤ 0.3. The microstructure, phase structure, ferroelectric, and dielectric properties of ceramics were systematically studied as high‐temperature capacitor materials. XRD pattern certified perovskite phase with no secondary phase in all compositions. As PMN concentration increased, the phase of (1−x)BNT‐xPMN ceramics transformed from ferroelectric to relaxor gradually at room temperature, with prominent enhancement of dielectric temperature stability. For the composition x = 0.2, the temperature coefficient of capacitance (TCC) was <15% in a wide temperature range from 56 to 350°C with high relative permittivity (>3300) and low dielectric loss (<0.02) at 150°C, which indicated promising future for (1−x)BNT‐xPMN system as high‐temperature stable capacitor materials.

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Temperature stability, structural evolution and dielectric properties of BaTiO3–Bi(Mg2/3Ta1/3)O3 perovskite ceramics

Cited by 64 publications

References 33 publications

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Temperature Stable Dielectric Properties in BaTiO₃–Bi(Mg_2/3Nb_1/3)O₃–NaNbO₃ Solid Solution

High permittivity (1−x)Bi_1/2Na_1/2TiO₃‐xPbMg_1/3Nb_2/3O₃ ceramics for high‐temperature‐stable capacitors

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Temperature stability, structural evolution and dielectric properties of BaTiO3–Bi(Mg2/3Ta1/3)O3 perovskite ceramics

Cited by 64 publications

References 33 publications

Ferroelectric to Relaxor Transition in BaTiO3–Bi(Zn2/3Nb1/3)O3 Ceramics

Ferroelectric to Relaxor Transition in BaTiO3–Bi(Zn2/3Nb1/3)O3 Ceramics

Temperature Stable Dielectric Properties in BaTiO3–Bi(Mg2/3Nb1/3)O3–NaNbO3 Solid Solution

High permittivity (1−x)Bi1/2Na1/2TiO3‐xPbMg1/3Nb2/3O3 ceramics for high‐temperature‐stable capacitors

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Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Ferroelectric to Relaxor Transition in BaTiO₃–Bi(Zn_2/3Nb_1/3)O₃ Ceramics

Temperature Stable Dielectric Properties in BaTiO₃–Bi(Mg_2/3Nb_1/3)O₃–NaNbO₃ Solid Solution

High permittivity (1−x)Bi_1/2Na_1/2TiO₃‐xPbMg_1/3Nb_2/3O₃ ceramics for high‐temperature‐stable capacitors