Influence of TiO2 ions on Spectroscopic Properties of Oxyfluoride Glasses

Lakshmi, N.; Cole, Sandhya

doi:10.1016/j.matpr.2019.06.293

Cited by 6 publications

(14 citation statements)

References 37 publications

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“…This decreasing trend appears to be consistent in the literature. However, there are only three articles [ 14 , 65 , 66 ] that provided data on the effects of Ti vis-à-vis network coordination numbers in borate glasses, two investigating the same glass system [ 65 , 66 ]. It was reported that low concentrations of TiO 2 (where the Na 3 AlF 6 modifier behaviour was predominant [ 65 ]) were associated with the presence of TiO 4 units and appeared to promote an increased population of B4 units in borate glasses.…”

Section: Discussionmentioning

confidence: 99%

“…According to Sun’s Single Bond Strength Criterion and Dietzel’s Field Strength Criterion, Ti is characterized as an intermediate element [ 13 ]. This feature provides the unique opportunity to tailor Ti-containing glasses for a range of indications; for instance, the empty or unfilled d -shells of Ti ions may contribute to non-linear polarizabilities, making TiO 2 substituted glasses promising candidates for use as nonlinear optical devices [ 14 ]. Materials consisting of mixed valence state Ti ions are also probable candidates as cathode materials for photoelectrochemical cells (PECs) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, understanding the structural role that F may play in various glass networks can inform the design of new materials based on desirable intrinsic (composition and structure) and extrinsic (material performance) parameters. For example, the inclusion of alkaline earth fluorides (e.g., CaF 2 ) in borate, phosphate, and silicate glasses has been shown to improve transparency, decrease liquidus temperatures, and reduce melt viscosity [ 14 , 25 , 26 ]. It has also been established that alkaline earth fluorides produce highly transparent materials and are, therefore, intended as additives for optical materials used in photonics or as scintillators [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the inclusion of alkaline earth fluorides (e.g., CaF 2 ) in borate, phosphate, and silicate glasses has been shown to improve transparency, decrease liquidus temperatures, and reduce melt viscosity [ 14 , 25 , 26 ]. It has also been established that alkaline earth fluorides produce highly transparent materials and are, therefore, intended as additives for optical materials used in photonics or as scintillators [ 14 ]. Additionally, F-containing materials display enhanced electrochemical properties for use in Li-ion cells due to the strong inductive potential of F with phosphates, for example, in lithium fluorophosphate glasses/glass ceramics [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

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State of the Art Review for Titanium Fluorine Glasses and Glass Ceramics

Kettlewell,

Boyd

2024

Materials

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Titanium (Ti) and fluorine (F) have the potential to provide a variety of desirable physical, chemical, mechanical, and biological properties applicable to a broad range of indications. Consequently, Ti- and F-containing glasses and glass ceramics are currently under investigation for use in nuclear, optical, electrochemical, dental, and industrial fields. Accordingly, significant interest exists with respect to understanding the individual and interaction effects that these elements have on material structure and properties to support the accelerated design, development, and deployment of these materials. This review aims to serve as a foundational reference across multiple disciplines, highlighting the fundamental properties and versatility of Ti- and F-containing glasses and glass ceramics. By consolidating our current knowledge of these materials, this broad overview will identify areas in which we can further our understanding to support the a priori prediction and effective design of these systems. Finally, this paper will introduce the potential to improve material design by integrating experimentation, modelling, and computational approaches in a manner commensurate with the principles of the Materials Genome Initiative.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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State of the Art Review for Titanium Fluorine Glasses and Glass Ceramics

Kettlewell,

Boyd

2024

Materials

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“…Among transition metal oxides, TiO 2 is a useful glass constituent for preparation some special optical glasses and glass-ceramics. Titanium ions usually exist in the glassy host in trivalent and tetravalent valence states and participate in the glassy matrix with TiO 4 , TiO 6 , and sometimes TiO 5 structural groups [13].…”

Section: Introductionmentioning

confidence: 99%

Structural and optical properties of barium titanium borate glasses doped with ytterbium

Marzouk

Azooz

Elsaghier

et al. 2022

J Mater Sci: Mater Electron

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Barium titanium borate glasses doped with ytterbium ions were fabricated via standard melt quenching technique. The building structure of the glass matrices doped with ascendant ratios of ytterbium ions were studied using Raman and FTIR spectroscopies. The UV–Vis–NIR optical absorption spectra were investigated and used to calculate optical bandgaps, Urbach energies, refractive indices, metallization criterion, optical basicity, and dispersion parameters. The absorption and emission cross-sections and gain spectra for 2F5/2 → 2F7/2 transition of ytterbium ions were investigated. The high values of the emission cross-sections of the studied glasses make them strong candidates for laser and amplifier applications.

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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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Influence of TiO2 ions on Spectroscopic Properties of Oxyfluoride Glasses

Cited by 6 publications

References 37 publications

State of the Art Review for Titanium Fluorine Glasses and Glass Ceramics

State of the Art Review for Titanium Fluorine Glasses and Glass Ceramics

Structural and optical properties of barium titanium borate glasses doped with ytterbium

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

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