Crystallization and dielectric properties of PbTiO3 based glass ceramics

Shankar, J.; Rani, G. Neeraja; Deshpande, V.K.

doi:10.1063/1.5028799

Cited by 2 publications

(6 citation statements)

References 8 publications

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“…It is noticed that the maximum polarization (P max ) increases with increasing the electric field, possibly due to the dielectric charging effect [57]. The lower values of remnant polarization (P r ) in the present transparent composite sample may be a result of the presence of the glassy phase and the smaller crystallite size of BaTiO 3 nanoparticles [56]. The values of the coercive field (E c ) and the loop area increase with increasing the electric field.…”

Section: Optical and Ferroelectric Studiesmentioning

confidence: 69%

“…14 a and b The plot of (α hν) 1/2 versus hν and the plot of ln α versus hν of the present transparent composite sample, respectively Fig. 15 The polarization versus electric field (P-E) of the present transparent composite sample at various electric field attributed to three reasons: the electrical nonpolling of the glassy phase, the interface between the crystal (BaTiO 3 ) and glass, and the stresses applied on BaTiO 3 nanoparticles by the surrounding rigid glass matrix [55,56]. Parameters of the P-E loops for the present transparent composite sample at various electric field are listed in Table1.…”

Section: Optical and Ferroelectric Studiesmentioning

confidence: 94%

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Double hysteresis (P-E) loops in the transparent composite containing BaTiO3 at room temperature

Abdel-Khalek,

Mohamed,

Ismail

2024

Appl. Phys. A

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A transparent composite sample containing BaTiO3 was synthesized by using the melting quenching method. The presence of a glassy phase in this composite sample was detected through XRD analysis, and this was further confirmed by DSC study. TEM and SAED analyses provided evidence that the BaTiO3 nanoparticles/clusters are embedded within the borate glass matrix, establishing the composite nature of this sample. FTIR spectrum of the present sample revealed that the glass matrix is composed of two structural groups (BO3 with NBO’s, and BO4), along with the distinct groups for BaTiO3. XPS spectra of the present composite sample indicated the presence of more than one type of boron, barium, titanium and oxygen. DSC and dielectric studies of the present composite sample revealed the presence of the phase transition temperature (Tc). Dielectric constant (ɛr) and dielectric loss (tan δ) curves of the present composite sample displayed an anomaly peak in the vicinity of TC. The optical transmission spectrum of the present composite sample exhibit two transmission bands of Ti3+ (3d1) ions in tetragonal distorted sites. At room temperature, the present transparent composite sample exhibited double hysteresis loops for BaTiO3 at low electric fields. The results obtained can be used for the development of lead-free ferroelectric material.

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Section: Optical and Ferroelectric Studiesmentioning

confidence: 69%

Section: Optical and Ferroelectric Studiesmentioning

confidence: 94%

Double hysteresis (P-E) loops in the transparent composite containing BaTiO3 at room temperature

Abdel-Khalek,

Mohamed,

Ismail

2024

Appl. Phys. A

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“…14 Ferroelectric crystalline phases within a glass-ceramic system that have been investigated include BaTiO 3 , LiTaO 3 , LiNbO 3 , Pb 5 Ge 3 O 11 , and PbTiO 3 . [15][16][17] Glass compositions are chosen that will crystallize into a ferroelectric phase and after subsequent melting, heat treatments, and ferroelectric poling, demonstrate crystallographic and polar orientation. All ferroelectric materials have domains that are polar point groups, and the direction of polarization can be changed with application of an electric field.…”

Section: Ferroelectric Glass-ceramicsmentioning

confidence: 99%

“…In a SiO 2 -Li 2 O-Nb 2 O 5 glass composition, application of an electric field close to the crystallization temperature yielded LiNbO 3 crystallites with preferential polar orientation. 20,111 Poling has also been used to orient domains in ferroelectric glass-ceramics such as NaNbO 3 , 130,131 and PbTiO 3 17,132,133 based glass-ceramics to demonstrate piezoelectric properties. To date, however, no glass-ceramic system has been poled to demonstrate ferroelectric domain alignment and polar crystallographic orientation for the purpose of piezoelectric measurements.…”

Section: Thermal Poling (Chemical Potential Gradient)mentioning

confidence: 99%

“…In the year of writing this paper, we are in the 100 th year celebration of that discovery 14 . Ferroelectric crystalline phases within a glass‐ceramic system that have been investigated include BaTiO 3 , LiTaO 3 , LiNbO 3 , Pb 5 Ge 3 O 11 , and PbTiO 3 15‐17 . Glass compositions are chosen that will crystallize into a ferroelectric phase and after subsequent melting, heat treatments, and ferroelectric poling, demonstrate crystallographic and polar orientation.…”

Section: Introductionmentioning

confidence: 99%

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Piezoelectric glass‐ceramics: Crystal chemistry, orientation mechanisms, and emerging applications

2021

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Piezoelectric materials have coupled mechanical and electrical energies and have long been used in devices for actuators, sensors, energy harvesters, frequency filters, and various additional applications. Piezoelectricity requires a non‐centrosymmetric crystal structure and is therefore confined to materials that possess a periodic crystalline structure. Due to the non‐crystalline nature of glass, piezoelectricity is fundamentally forbidden. However, one way to exploit piezoelectric properties in a glassy matrix is by developing glass‐ceramics that possess controlled growth of a crystalline phase. Growth and orientation of piezoelectric crystals in a glassy matrix is a non‐trivial process that has long been explored to combine the formability of glass with the thermal and mechanical resilience of glass‐ceramics. While extensive work has been done in the field of functional glass‐ceramics, the results are presented in isolated articles and a comprehensive review pertaining to symmetry breaking methods to exploit anisotropic properties in glass‐ceramics has been absent from the literature. Here, we present a global review of the fundamental symmetry requirements for piezoelectricity, the development of polar, piezoelectric glass‐ceramic compositions (specifically those with LiNbO3 and fresnoite‐based crystal phases), and various crystal growth and orientation mechanisms, including relevant kinetic and thermodynamic driving forces. Lastly, we discuss the challenges associated with implementing gradients to drive oriented crystal growth to develop non‐centrosymmetry, and the need for future modeling work to produce adequate time‐temperature‐transformation (TTT) diagrams that take into account kinetic and thermodynamic driving forces for oriented crystal growth. Going beyond technical challenges, we conclude with an examination of current and potential applications for piezoelectric glass‐ceramics that combine the formability of glass with the symmetry‐dependent properties of ceramics.

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Crystallization and dielectric properties of PbTiO3 based glass ceramics

Cited by 2 publications

References 8 publications

Double hysteresis (P-E) loops in the transparent composite containing BaTiO3 at room temperature

Double hysteresis (P-E) loops in the transparent composite containing BaTiO3 at room temperature

Piezoelectric glass‐ceramics: Crystal chemistry, orientation mechanisms, and emerging applications

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