Effect of the chemical composition on the structural and mechanical properties of phosphate glass fibers based on natural phosphate

Eddine, Oumaima Jamal; Wakrim, Hasna; Bouchti, Mehdi El; Boukhriss, Aïcha; Cherkaoui, Omar; Hannache, Hassan; Gmouh, Saïd

doi:10.1016/j.jallcom.2019.152808

Cited by 17 publications

(5 citation statements)

References 38 publications

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“…It is important to mention that the symmetric stretching of P=O, which relates to P 3 units, can also be detected in the range of 1180-1280 cm −1 . Vibrations around 1362 cm −1 are assigned to symmetric stretching vibrations of P=O bands [35,36,37]. The FTIR spectra confirmed the structural units due to PbO, P 2 O 5 and B 2 O 3 .…”

Section: Sample Preparation and Experimental Techniquesmentioning

confidence: 65%

Role of PbO and Up-conversion in RE doped B2O3 - P2O 5 glasses

Singh,

Singh

2024

Preprint

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To investigate the role of PbO as a former or a modifier and effect of its compositional variation on the physical, structural and optical properties, lithium lead borophosphate glasses were synthesized by melt quenching technique. For physical properties of the prepared glasses, density was measured by the Archimedes principle and density showed an increasing trend with increasing concentration of lead oxide. The structural analysis were performed through X-ray diffraction and Fourier transform infrared spectroscopy. Structural units due to PbO, P2 O5 and B2O3 were identified. Ultraviolet-visible absorption spec-troscopy was performed for optical properties and increase in the indirect band gap from 4.80 eV to 4.90 eV was observed. One glass sample was chosen for doping of erbium, neodymium, thulium and ytterbium, for study of their up-conversion properties. All the prepared samples were excited at 980 nm and ytterbium being a sensitizer helps in up-converting infrared light to visible light. As up-conversion is a host dependent process, up-1 conversion results suggested that the rare earth doped lithium lead borophosphate glasses are great host for up-conversion and these glasses can find applications in display devices and lasers.

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Section: Sample Preparation and Experimental Techniquesmentioning

confidence: 65%

Role of PbO and Up-conversion in RE doped B2O3 - P2O 5 glasses

Singh,

Singh

2024

Preprint

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“…All PGs samples were successfully transformed into continuous monofilaments fibers by a melt-draw spinning process. The spinning process reported here was carried out with the steps and precautions described in detail in our previous papers [20,21]. In this study, the winding speed was set at 538 rpm and the optimal spinning temperatures are 750 • C (temperature at the top) and 550 • C (temperature at the bottom).…”

Section: Methodsmentioning

confidence: 99%

“…Scanning electron microscope (SEM) image of the OJ 6 fiberglass sample was taken with ZEISS Supra 55VP scanning electron microscope. The mechanical properties of the PGFs were investigated by tensile tests using a tensile testing machine (model LUDWIC Mpk, made in Germany) [20,21], according to BS ISO 11566:1996 [22]. The values of the density (ρ) were measured by immersing the samples of PGFs according to the Archimedes technique (BS 10119) [21].…”

Section: Methodsmentioning

confidence: 99%

“…At last, the broadband around 541 cm − 1 can be ascribed to the deformation mode δ(PO 4 ) 3of the isolated tetrahedra groups characteristic of phosphate units (Q 0 ) [20,32,33].…”

Section: Structural Characterizationmentioning

confidence: 99%

“…The significant values of mechanical quantities found in our study can be explained by the dependence of the diameter on the tensile strength, and therefore on the breaking strain and Young's modulus. On the other hand, Ahmed et al [24] tested individual calcium phosphate glass fibers of the 50P 2 O 5 -50CaO system with a diameter of 20 μm. They found that the values obtained of tensile strength and Young's modulus were 475 MPa and 44 GPa, respectively.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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Effect of Eu3+ and Tb3+ ions concentration on the mechanical, structural, and photoluminescence properties of phosphate glass fibers

et al. 2021

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Two series of phosphate glasses belonging to the (65-x) P 2 O 5 -35CaO-xRE 2 O 3 system (RE = Eu or Tb; 0 ≤ x ≤ 6 mol%) were prepared by the melt-quenching technique. All compositions were successfully drawn as continuous monofilaments fibers. The effect of Eu 3+ and Tb 3+ ions concentration on their mechanical, structural, and photoluminescence properties was investigated. The results revealed that the highest tensile strength was 1031 ± 34 MPa for fibers doped with 6 mol% of Eu 2 O 3 and 1014 ± 65 MPa for fibers doped with 6 mol% of Tb 2 O 3 . The addition of RE 2 O 3 showed an increase in density and Tg. A structural investigation was carried out using FTIR spectroscopy. The photoluminescence properties in terms of excitation and emission spectra were investigated in detail. The most intense emission band at 611 nm corresponds to the 5 D 0 → 7 F 2 transition of Eu 3+ ions under 392 nm excitation was observed for fibers doped with 6 mol% of Eu 2 O 3 . The most intense emission band at 543 nm corresponds to the 5 D 4 → 7 F 5 transition of Tb 3+ ions under 374 nm excitation was observed for fibers doped with 6 mol% of Tb 2 O 3 . These two compositions exhibited the highest absolute quantum yield, reaching 20.25% and 4.81%, respectively.

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$$\text {Er}^{3+}$$, $$\text {Nd}^{3+}$$, $$\text {Tm}^{3+}$$: Up-conversion in Lead Borophosphate Glasses for Visible Emission

Singh,

Singh

2024

J Fluoresc

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Effect of the chemical composition on the structural and mechanical properties of phosphate glass fibers based on natural phosphate

Cited by 17 publications

References 38 publications

Role of PbO and Up-conversion in RE doped B2O3 - P2O 5 glasses

Role of PbO and Up-conversion in RE doped B2O3 - P2O 5 glasses

Effect of Eu3+ and Tb3+ ions concentration on the mechanical, structural, and photoluminescence properties of phosphate glass fibers

$$\text {Er}^{3+}$$, $$\text {Nd}^{3+}$$, $$\text {Tm}^{3+}$$: Up-conversion in Lead Borophosphate Glasses for Visible Emission

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