Low temperature sintering and dielectric properties of (Ba,Ca)(Ti,Li)(O,F)3 ceramics with high permittivity

Taïbi-Benziada, Laldja; Hilal, Hikmat S.; Mühll, Régnault von der

doi:10.1016/j.solidstatesciences.2006.01.017

Cited by 16 publications

(9 citation statements)

References 12 publications

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“…The decrease of ε r ' and the increase of ε r '' at high frequencies are ascribed to the beginning of a dielectric relaxation which occurs not very far from 40 MHz, the limit of the setup used. This result agrees quite well with previous works on fluorinated barium titanate and can be mainly related to the simultaneous substitution Li -Ti and F -O [9,11,12]. …”

Section: Resultssupporting

confidence: 93%

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Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Taïbi-Benziada

Simon

2009

Open Chemistry

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Section: Resultssupporting

confidence: 93%

“…All these results are in good agreement with our previous works on oxifluorides deriving from BaTiO 3 [10][11][12][13].…”

Section: Resultssupporting

confidence: 93%

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Taïbi-Benziada

Simon

2009

Open Chemistry

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“…This result suggests that the crystallographic structure changes from tetragonal symmetry to orthorhombic one with increasing x from 0.3 to 0.5 mol%. On the other hand, the diffraction peaks shift to lower angles by increasing x, which corresponds to the enlargement of the lattices owing to the substitution of Li + (0.76 Å) for Ti 4+ (0.61 Å) [12,13]. BaTiO 3 -xLi 2 O ceramics sintered at 1000°C and 1100°C showed the similar XRD patterns to the samples sintered at 1050°C.…”

Section: Methodsmentioning

confidence: 82%

Low-temperature sintering of Li2O-doped BaTiO3 lead-free piezoelectric ceramics

Zhang

Yang

2012

J Electroceram

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Low-temperature sintering of BaTiO 3 ceramics using Li 2 O as sintering aids was investigated with a special influences of Li 2 O content (0-4 mol%) and sintering temperature (1000-1100°C) on crystalline structure and electrical properties. The sinterability of BaTiO 3 ceramics significantly improved by adding Li 2 O, whose densification sintering temperature reduced from 1300°C to 1000°C. XRD pattern indicated that BaTiO 3 -xLi 2 O samples were single phase with a tetragonal symmetry as x00-0.3 mol%, while the samples became an orthorhombic symmetry as x 0 0.5-4 mol%. The densification sintering temperature in which samples showed relative density higher than 90 % decreased with increasing Li 2 O content. A maximum d 33 value (200 pC/N) was obtained for the BaTiO 3 -0.5 mol%Li 2 O sample sintered at 1050°C, which is attributed to a vicinity of the phase transition and the high density. Adding Li 2 O not only reduced the sintering temperature but also obtained the acceptable piezoelectric properties, which will make BaTiO 3 become a kind of promising and practical lead-free piezoelectric ceramics.

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“…Although adding LiF promotes the grain growth and also prevents the emitting of carbon dioxide during the liquefaction process, the effect of LiF fixed at 0.04 should be the same for all samples. Therefore, the initially grown grains may be attributed to the increased oxygen vacancies that produced by substituting Ca 2+ (0.99 Å) for Ti 4+ (0.61 Å) as described by the following defect equation:

C {normala}^{2 +} \overset{T {normali}^{4 +}}{true⟶} C {a^{″}}_{Ti} + {normalV}_{normalO}^{• •} .

…”

Section: Resultsmentioning

confidence: 99%

Effect of the orthorhombic/rhombohedral volume ratio on the piezoelectric properties of BaCa_xTiO₃–0.04LiF ceramics

Zhao

Zhang

Zhou

et al. 2013

Physica Status Solidi (a)

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BaCaxTiO3–0.04LiF (0.010 ≤ x ≤ 0.045) ceramics were prepared by normal sintering at 1100 °C in air. A two‐phase coexisted region across orthorhombic and rhombohedral symmetry was designed by refining the components. The detailed phase structure was analyzed quantitatively by the Rietveld refinement. BaCa0.035TiO3–0.04LiF ceramic showed better properties with d33 = 354 pC N−1, kp = 39%, Qm = 314, and TC = 65 °C, in which the relative proportion of rhombohedral symmetry was 74.86%, the grain size was 6.0 µm and the relative density was 91%, indicating that the synergistic effect of the phase structure, fine grain, and relatively high density contributed to the outstanding piezoelectric properties.

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Low temperature sintering and dielectric properties of (Ba,Ca)(Ti,Li)(O,F)3 ceramics with high permittivity

Cited by 16 publications

References 12 publications

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Low-temperature sintering of Li2O-doped BaTiO3 lead-free piezoelectric ceramics

Effect of the orthorhombic/rhombohedral volume ratio on the piezoelectric properties of BaCa_xTiO₃–0.04LiF ceramics

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Low temperature sintering and dielectric properties of (Ba,Ca)(Ti,Li)(O,F)3 ceramics with high permittivity

Cited by 16 publications

References 12 publications

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Sintering, microstructures and dielectric properties of Ba1−xPbx(Ti1−xLix)O3−3xF3x ferroelectric ceramics

Low-temperature sintering of Li2O-doped BaTiO3 lead-free piezoelectric ceramics

Effect of the orthorhombic/rhombohedral volume ratio on the piezoelectric properties of BaCaxTiO3–0.04LiF ceramics

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Effect of the orthorhombic/rhombohedral volume ratio on the piezoelectric properties of BaCa_xTiO₃–0.04LiF ceramics