Bulk crystallisation of (00l) oriented fresnoite Sr2TiSi2O8 in glass-ceramics of the Sr–Ti–Si–K–B–O system

Maury, N.; Cambier, F.; Gonon, Maurice

doi:10.1016/j.jnoncrysol.2010.11.036

Cited by 16 publications

(15 citation statements)

References 14 publications

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“…Extensive studies were reported on the crystallization and dielectric behavior of ferroelectric GC, specifically PbTiO 3 and NaNbO 3 . More recently, researchers reported the crystallization behavior, microstructure, and dielectric properties of various ferroelectric GC, such as lead strontium titanate, PZT, barium strontium titanate, and Sr 2 TiSi 2 O 8 . However, use of PZT and other lead containing materials has been restricted because of existence of large amounts of toxic lead.…”

Section: Introductionmentioning

confidence: 99%

Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

et al. 2012

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Bismuth titanate (Bi 4 Ti 3 O 12 ) (BiT), glass is prepared by the melt-quench technique in the SiO 2 -K 2 O-Bi 2 O 3 -TiO 2 (SKBT) system doping with Eu 2 O 3 and transparent BiT glass-ceramics (GC) is derived from it by controlled heat-treatment at 500°C by varying duration. The structural properties of the heat-treated GC are investigated using X-ray diffraction (XRD), electron microscopy [Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM)], and fourier transform infrared reflectance spectroscopy. FE-SEM and TEM images show the formation of polycrystalline spherical particles of 100-200 nm with 10-15 nm crystallites after heat-treatment. A significant increase in e r value (from 20 to 35) was observed with increase in heat-treatment time. The transmission losses of GC which happened with heat-treatment time are due to Rayleigh scattering exhibited by nanocrystallites of BiT. The excitation spectra have been recorded by monitoring emission at 612 nm corresponding to the 5 D 0 ? 7 F 2 transition and an intense 467 nm excitation band corresponding to the 7 F 0 ? 5 D 2 has been observed. Emission spectra were recorded by exciting the glass samples at 467 nm. It is observed that with increase in heat-treatment time, the intensity of red emission at 612 nm increases by 8-fold, which has happened due to the occupancy of Eu 3+ ions in the low phonon energy crystal sites of BiT. S. Trolier-McKinstry-contributing editorManuscript No. 30710.

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Section: Introductionmentioning

confidence: 99%

Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

et al. 2012

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“…While a model of reoccurring oriented nucleation of STS was formulated in Ref. 22, where some K 2 O and B 2 O 3 was added to the composition, this model was questioned in Ref. 5 where it was noted that the crystal growth morphology in Ref.…”

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confidence: 99%

“…5 where it was noted that the crystal growth morphology in Ref. 22 may rather imply dendritic growth. Dendritic growth in glass-ceramics has e.g.…”

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confidence: 99%

Viscous Fingering and Dendritic Growth of Surface Crystallized Sr2TiSi2O8 Fresnoite

Wisniewski

Patschger

Rüssel

2013

Sci Rep

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During the quenching of a melt with the composition 2SrO·TiO2·2.75SiO2, cubic SrTiO3- and tetragonal Sr2TiSi2O8-crystals are formed at the surface. Subsequent crystal growth leads to dendritic fresnoite structures which become increasingly finer until the mechanism changes to viscous fingering during further cooling. In the final stages of this initial growth step, the crystal orientations of these dendrites systematically change. Due to a complete absence of bulk nucleation in this system, crystal growth is resumed upon reheating to 970°C and fractal growth with the c-axis tilted by about 45° from the main growth direction is observed. The results are interpreted to confirm the link between viscous fingering and dendritic growth in the case of a true crystallization process.

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“…Parent glasses of compositions 2SrO 1TiO2 3.3SiO2 xK2O yAl2O3 (ST1.3S + xK2O + yAl2O3 with the new nomenclature [14]) are prepared from reagent grade SrCO3 (Alfa Aesar, 99.99%), TiO2 (VWR, 99.99%), SiO2 (Sigrano, 97-99.98%), Al2O3 (Almatis, +99%) and K2CO3 (VWR, +99%). Based on a previous work [16], x is fixed to 0.2 and y = 0 ; 0.02 ; 0.05 ; 0.10 ; and 0.15. Wet processing in isopropanol is used to mix the powders and obtain a good homogeneity.…”

Section: Methodsmentioning

confidence: 99%

“…An extensive review by Wisniewski et al covered different aspects of the crystallization of fresnoite in glasses [14]. In previous papers, we have shown that a (002)-oriented surface crystallization can be obtained through laser treatment [15] and conventional thermal treatment of parent glasses belonging to the Sr-Ti-Si-K-B-O system [16][17][18]. We also highlighted that the evolution of the preferential orientation in depth is strongly dependent on the residual glass characteristics, and specifically the amount of K and B.…”

Section: Introductionmentioning

confidence: 97%

Structure and Properties of Piezoelectric Strontium Fresnoite Glass-Ceramics Belonging to the Sr–Ti–Si–Al–K–O System

et al. 2019

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Crystallization of strontium fresnoite Sr 2 TiSi 2 O 8 piezoelectric crystals in Sr-Ti-Si-K-Al-O parent glasses is investigated with the aim of showing the influence of composition and crystallization conditions on the microstructure and piezoelectric properties of the resulting glass-ceramic. All the investigated conditions lead to a surface crystallization mechanism that induces a preferential orientation of crystal growth in the glasses. Near the surface, all the glass-ceramics obtained exhibit (002) planes preferentially oriented parallel to their faces. Deeper in the specimens, this preferential orientation is either kept or tilted to (201) after a depth of about 300 µm. The measurement of the charge coefficient d 33 of the glass-ceramic highlights that surface crystallization induces mirror symmetry in the polarization. It reaches 11 to 12 pC/N and is not significantly influenced by the preferential orientation (002) or (201). High temperature XRD shows the stability of the fresnoite phase in the glass-ceramics up to 1000 • C. Mechanical characterization of the glass-ceramics by impulse excitation technique (IET) highlights that the softening of the residual glass leads to a progressive decrease of Young's modulus in the temperature range 600-800 • C. Damping associated to the viscoplastic transition become severe only over 800 • C.

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Bulk crystallisation of (00l) oriented fresnoite Sr2TiSi2O8 in glass-ceramics of the Sr–Ti–Si–K–B–O system

Cited by 16 publications

References 14 publications

Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

Viscous Fingering and Dendritic Growth of Surface Crystallized Sr2TiSi2O8 Fresnoite

Structure and Properties of Piezoelectric Strontium Fresnoite Glass-Ceramics Belonging to the Sr–Ti–Si–Al–K–O System

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Bulk crystallisation of (00l) oriented fresnoite Sr2TiSi2O8 in glass-ceramics of the Sr–Ti–Si–K–B–O system

Cited by 16 publications

References 14 publications

Transparent Eu3+‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

Transparent Eu3+‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

Viscous Fingering and Dendritic Growth of Surface Crystallized Sr2TiSi2O8 Fresnoite

Structure and Properties of Piezoelectric Strontium Fresnoite Glass-Ceramics Belonging to the Sr–Ti–Si–Al–K–O System

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Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties

Transparent Eu³⁺‐Doped Ferroelectric Bismuth Titanate Glass‐Ceramic Nanocomposites: Fabrication and Properties