The phase transitions and ferroelectric behavior of dense nanocrystalline BaTiO3 ceramics fabricated by pressure assisted sintering

Xiao, C. J.; Chi, Zhen; Zhang, W.W.; Li, F.Y.; Feng, Shaomin; Chen, Jin; Wang, X.H.; Deng, Xiangyun; Li, L.T.

doi:10.1016/j.jpcs.2006.11.014

Cited by 46 publications

(15 citation statements)

References 17 publications

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“…1, the lattice is single-domain tetragonal phase at 284 K. With temperature rising to T o-t ¼ 286 K, the dipoles orient and transform from a single-domain orthorhombic phase into a multidomain tetragonal one at two corners. Xiao et al [34] found the coexistence of ferroelectric tetragonal and orthorhombic phases in 30-nm BaTiO 3 ceramics at room temperature, and Ram et al [35] observed the orthorhombic crystal structure contained in BaTiO 3 nanoparticles, which are consistent with our calculations. When the temperature is above T o-t , 90 o domain appears in the lattice.…”

Section: Modelsupporting

confidence: 92%

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Fang

2014

Phys. Status Solidi B

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Microstructure evolution and size effect of a two-dimensional barium titanate lattice sqaure have been studied using phasefield simulation. Based on the Landau phenomenological model, we calculated the microstructure evolution of the tetragonal and orthorhombic ferroelectric BaTiO 3 started from a single domain with various lattice sizes. A directiondependent hysteresis loop can be quantitatively described. The results show that both the phase transition with temperature and polarization switching under an external electric field are accompanied by multidomain and multiphase production in a large single-domain lattice, but synchronous changes in polarization in small lattice; As the grain size decreases, the orthorhombic ! tetragonal phase-transition temperature increased, while the tetragonal ! cubic, cubic ! tetragonal, and tetragonal ! orthorhombic phase-transition temperatures decrease. An interesting conclusion is that it shows triple hysteresis loops along the [11]-direction when the lattice size decreases to a certain size. The simulations of microstructure evolutions not only produce a good domain-switching process under various electric fields, but also provide a comprehensive microstructure evolution in the vicinity of the phase-transition points. The physics underlying the continuous evolution of microstructure with electric field and temperature is discussed.

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Section: Modelsupporting

confidence: 92%

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Fang

2014

Phys. Status Solidi B

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“…The last method gives a dynamic loop that may lead, apparently, to higher values for the remnant polarization if parasitic contributions coming from leakage or transient currents are not subtracted [47]. In the present case, the remnant polarization obtained from the dynamic hysteresis loop presented in the supplemental material for undoped BaTiO 3 ceramic is of about 11.5 μCcm -2 , which is higher than previous reports showing values that spread between 0.005 μC/cm 2 and 7.5 μC/cm 2 [45,[48][49][50][51]. Also, the remnant polarization for the other BST ceramics is, in general, higher than previous reports [52,53].…”

Section: Functional Properties Of Bst Ceramicscontrasting

confidence: 73%

Intrinsic pyroelectric properties of thick, coarse grained Ba 1−x Sr x TiO 3 ceramics

Ianculescu

Pintilie

Vasilescu

et al. 2016

Ceramics International

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“…It should be emphasized that weak bands of A 1 (TO), A 1 (LO) and E(TO) appear in the Raman spectra of the studied BTS compounds. These peaks are typical for the orthorhombic phase (Xiao et al, 2007;Deng et al, 2006). In general, the Raman spectrum of the orthorhombic phase is very similar to that of the tetragonal phase but with much weaker intensity.…”

Section: Tablementioning

confidence: 79%

The effect of Sn for Ti substitution on the average and local crystal structure of BaTi₁₋_xSn_xO₃(0 ≤x≤ 0.20)

et al. 2014

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The effect of Sn for Ti substitution on the crystal structure of a perovskite, barium titanate stannate (BTS), BaTi1−xSnxO3 for x = 0, 0.025, 0.05, 0.07, 0.10, 0.12, 0.15 and 0.20, was investigated. The powders were prepared by the conventional solid‐state reaction technique. The structural investigations of the BTS powders were done at room temperature by X‐ray powder diffraction (XRD), transmission electron microscopy (TEM), high‐resolution TEM (HRTEM), selected‐area electron diffraction (SAED) and Raman spectroscopy analyses. Rietveld refinement of XRD data indicates that gradual replacement of titanium by tin in BaTiO3 provokes a phase transition from tetragonal for 0 ≤x≤ 0.07 to cubic for x = 0.12, 0.15 and 0.20. The coexistence of tetragonal (P4mm) and cubic (Pmm) crystal phases was established in powder with nominal composition BaTi0.9Sn0.1O3. The crystal phases determined by Rietveld refinement were confirmed by HRTEM and SAED analyses. The crystal structures of the BTS powders at short‐range scale were studied by Raman spectroscopy, which shows tetragonal (P4mm) and a small fraction of orthorhombic (Pmm2) crystal phases for all the examined BTS powders, implying a lower local ordering when compared to the average symmetry.

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The phase transitions and ferroelectric behavior of dense nanocrystalline BaTiO3 ceramics fabricated by pressure assisted sintering

Cited by 46 publications

References 17 publications

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Intrinsic pyroelectric properties of thick, coarse grained Ba 1−x Sr x TiO 3 ceramics

The effect of Sn for Ti substitution on the average and local crystal structure of BaTi₁₋_xSn_xO₃(0 ≤x≤ 0.20)

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The phase transitions and ferroelectric behavior of dense nanocrystalline BaTiO3 ceramics fabricated by pressure assisted sintering

Cited by 46 publications

References 17 publications

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Phase-field simulation study on size effect of the microstructure evolution of a single-domain barium titanate 2D lattice square

Intrinsic pyroelectric properties of thick, coarse grained Ba 1−x Sr x TiO 3 ceramics

The effect of Sn for Ti substitution on the average and local crystal structure of BaTi1−xSnxO3(0 ≤x≤ 0.20)

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Product

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The effect of Sn for Ti substitution on the average and local crystal structure of BaTi₁₋_xSn_xO₃(0 ≤x≤ 0.20)