PbMg1/3Nb2/3O3-doping effects on structural, thermal, Raman, dielectric and ferroelectric properties of BaTiO3 ceramics

Suchanicz, J.; Świerczek, Konrad; Nogas-Ćwikiel, E.; Konieczny, K.; Sitko, D.

doi:10.1016/j.jeurceramsoc.2014.12.019

Cited by 20 publications

(7 citation statements)

References 18 publications

(19 reference statements)

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“…Figure 3 shows the Raman spectra for BaTiO 3 (A1(TO), E(TO)) and 717 cm -1 (A1(LO), E(LO)). Similar bands were observed in BaTiO 3 based ceramics by Suchanicz et al 13 and Pokorny et al…”

Section: Raman Spectroscopysupporting

confidence: 85%

Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+

et al. 2017

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BaTiO 3 doped with Gd 3+ (Ba 1-x Gd x Ti 1-x/4 O 3 ) was synthesized using the solid-state reaction method with x = 0. 001, 0.003, 0.005, 0.01, 0.05, 0.1, 0.15, 0.20, 0.25, 0.30, and 0.35 Gd 3+ (wt. %). The powders were decarbonated at 900 °C and sintered at 1400 °C for 8 hours. The tetragonality of the synthesized Gd 3+ -doped BaTiO 3 particles was analyzed. XRD patterns and Raman spectra revealed that the crystal phase of the obtained particles was predominately tetragonal BaTiO 3 ; the intensity of the Raman bands at 205 cm , and 304 cm −1 decreased when Gd 3+ was increased. A secondary phase (Gd 2 Ti 2 O 7 ) was found when the Gd 3+ content was higher than 0.15 wt. %. The capacitance of the sintering pellets was measured at 1 kHz; these values were used to calculate the relative permittivity, the maximum permittivity values were recorded for the samples with x = 0.001, 0.005, and 0.1.

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“…Figure 3 shows the Raman spectra for BaTiO 3 (A1(TO), E(TO)) and 717 cm -1 (A1(LO), E(LO)). Similar bands were observed in BaTiO 3 based ceramics by Suchanicz et al 13 and Pokorny et al…”

Section: Raman Spectroscopysupporting

confidence: 85%

Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+

et al. 2017

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“…These diffraction peaks at 2θ = 22.2°, 31.6°, 38.9°, 45.3°, 50.9, 56.3°, 65.9°, 70.4° and 74.8° are clearly observed, which can be indexed to the pristine BaTiO 3 crystal plane of (100), (110), (111), (200), (210), (211), (220), (221) and (310), respectively. Obviously, all of the characteristic diffraction peaks of F-BaTiO 3 matched well with the curve of pristine BaTiO 3 , which is well consistent with the standard cards (JCPDS 31-0174) [25]. Moreover, for these surface grafted F-BaTiO 3 particles, superfluous peaks cannot be detected, indicating the well-organized cubic crystal form [26].…”

Section: Resultssupporting

confidence: 75%

Flexible Ultrahigh-Temperature Polymer-Based Dielectrics with High Permittivity for Film Capacitor Applications

Zheng

Tian

et al. 2017

Polymers

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Abstract:In this report, flexible cross-linked polyarylene ether nitrile/functionalized barium titanate(CPEN/F-BaTiO 3 ) dielectrics films with high permittivitywere prepared and characterized. The effects of both the F-BaTiO 3 and matrix curing on the mechanical, thermal and dielectric properties of the CPEN/F-BaTiO 3 dielectric films were investigated in detail. Compared to pristine BaTiO 3 , the surface modified BaTiO 3 particles effectively improved their dispersibility and interfacial adhesion in the polymer matrix. Moreover, the introduction of F-BaTiO 3 particles enhanced dielectric properties of the composites, with a relatively high permittivity of 15.2 and a quite low loss tangent of 0.022 (1 kHz) when particle contents of 40 wt % were utilized. In addition, the cyano (-CN) groups of functional layer also can serve as potential sites for cross-linking with polyarylene ether nitrile terminated phthalonitrile (PEN-Ph) matrix and make it transform from thermoplastic to thermosetting. Comparing with the pure PEN-ph film, the latter results indicated that the formation of cross-linked network in the polymer-based system resulted in increased tensile strength by~67%, improved glass transition temperature (T g ) by~190 • C. More importantly, the CPEN/F-BaTiO 3 composite films filled with 30 wt % F-BaTiO 3 particles showed greater energy density by nearly 190% when compared to pure CPEN film. These findings enable broader applications of PEN-based composites in high-performance electronics and energy storage devices materials used at high temperature.

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“…First, magnesium oxide MgO (Fluka, 99.5%) and niobium pentoxide Nb 2 O 5 (Aldrich, 99.5%) with 5 mol% excess MgO [8,9] were ball milled in ethanol using zirconia balls for 12 h and calcined at 1000 ℃ for 3 h in an alumina crucible to form magnesium niobate MgNb 2 O 6 (columbite). 5 mol% excess MgO was added to avoid the undesired pyrochlore phase.…”

Section: Methodsmentioning

confidence: 99%

“…5 mol% excess MgO was added to avoid the undesired pyrochlore phase. In the second step, the appropriate amounts of barium titanate BaTiO 3 (Inframat Advanced Materials, obtained from BaCO 3 (99.95%) and TiO 2 (99.95%)) powders and lead oxide PbO (Chempur, 99%) were weighed and mixed with magnesium niobate MgNb 2 O 6 by ball milling in ethanol using zirconia balls for 24 h. 3 mol% excess of PbO was added to compensate the lead oxide volatility [8]. The obtained powders were uniaxially pressed into disk samples with a diameter of 10 mm and a thickness of 1 mm.…”

Section: Methodsmentioning

confidence: 99%

Electrical transport in low-lead (1−x)BaTiO3–xPbMg1/3Nb2/3O3 ceramics

et al. 2017

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 in the high-temperature region. The temperature dependence of the dc conductivity showed a change in slope around the temperature at which the phase transition appeared. Both ac and dc conductivities showed a thermally activated character and possessed linear parts with different activation energies and some irregular changes. It was found that the hopping charge carriers dominate at low temperature and small polarons and oxygen vacancies dominate at higher temperature. (1x)BaTiO 3 -xPbMg 1/3 Nb 2/3 O 3 ceramics are expected to be promising new candidate for low-lead electronic materials.

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PbMg1/3Nb2/3O3-doping effects on structural, thermal, Raman, dielectric and ferroelectric properties of BaTiO3 ceramics

Cited by 20 publications

References 18 publications

Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+

Structural Evolution and Electrical Properties of BaTiO3 Doped with Gd3+

Flexible Ultrahigh-Temperature Polymer-Based Dielectrics with High Permittivity for Film Capacitor Applications

Electrical transport in low-lead (1−x)BaTiO3–xPbMg1/3Nb2/3O3 ceramics

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