Optical properties of lead phosphate glasses

Dayanand, C.; Sarma, Radha; Bhikshamaiah, G.; Salagram, M.

doi:10.1016/0022-3093(94)90376-x

Cited by 79 publications

(34 citation statements)

References 8 publications

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“…5 ions which add to the polymeric matrix and change the network. Thus the creation of a smaller number of NBO seems to be the reason for absorption edge shifting toward longer wavelengths with increase in lead content and results in decrease in the value of E opt [24]. According to the above, both the optical gap and the band tail are behaving oppositely.…”

Section: Uv-vis Spectramentioning

confidence: 73%

Optical and dielectric properties of poly(vinylacetate)/lead oxide composites

Abdelaziz

2011

J Mater Sci: Mater Electron

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Composite films of poly(vinylacetate)/red lead oxide have been prepared by mixing the fine lead oxide particles into polyvinylacetate solution under ultrasonication followed by film casting technique. Structural, optical and dielectric properties have been performed to characterize these composites films and compared their properties to pure PVAc film. The changes in the structural of the prepared films were investigated by X-ray diffraction (XRD) and FT-IR spectra. It has been observed that the crystallinity of the composites films depends on the Pbcontent. Optical spectra of the composites films showed direct allowed band gaps lying in the range of 5.0-4.6 eV which is lower than that of PVAc. Frequency and doping level dependence of dielectric constant (e 0 ), ac conductivity (r ac ) and tangent loss (tand) have been measured. The values of e 0 were decreased with increasing in frequency, which indicates that the major contribution to the polarization comes from orientation polarization. The ac conductivity is more for doped PVAc than that of undoped PVAc. The experimental results show that e 0 and r ac increase with adding of lead oxide in PVAc. The controllable of optical and dielectric properties of the composite film will draw much attention for potential applications.

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Section: Uv-vis Spectramentioning

confidence: 73%

Optical and dielectric properties of poly(vinylacetate)/lead oxide composites

Abdelaziz

2011

J Mater Sci: Mater Electron

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“…For binary (PbO) x (P 2 O 5 ) 1Àx system, the glass formation takes place only over a limited region of composition namely, 0.4 6 x 6 0.6. Glasses with x < 0.5 are moisture sensitive [2] and have poor thermal stability and cannot be effectively used for any technological applications. Moisture sensitiveness of phosphate glasses arises due to the presence of phosphorus structural units with non-bridging oxygen atoms, which absorb moisture and get converted to phosphoric acid which is detrimental to the glass.…”

Section: Introductionmentioning

confidence: 99%

Thermal and structural studies on TeO2 substituted (PbO)0.5(P2O5)0.5 glasses

Sudarsan

Mishra

Kulshreshtha

2004

Journal of Non-Crystalline Solids

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“…The above equation (1) is still suitable to apply because the absorption edge in disordered materials is usually interpreted in terms of indirect transitions across the optical band gap [25]. Since this equation can be readjusted to represent the linearity between (αћω) 1/2 and (ћω -E opt ), following the procedure given by Dayanand et al [26], the E opt value is determined from the plot of (αћω) 1/2 versus ћω (eV).…”

Section: Resultsmentioning

confidence: 99%

Structural Investigations of Cr3+ Ions Doped Alkali Lead Zinc Phosphate Glasses

Sastry¹

2015

IJIRSET

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Lead zinc phosphate glasses containing 0.1% transition metal ion Cr 3+ were prepared by melt quenching technique and their amorphous nature confirmed by X-Ray diffraction. The covalent bond nature of Cr 3+ ions with octahedral symmetry in glass network was established through Electron Paramagnetic Resonance and optical absorption spectroscopic studies. Endothermic dip for glass transition temperature (T g ) at about 410 0 C and an exothermic peak subsisted from thermal studies were obtained. De-polymerization of host glass network due to addition of alkali content to the glass matrix, has turned as a strong candidate for nonlinear optical laser applications.

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Optical properties of lead phosphate glasses

Cited by 79 publications

References 8 publications

Optical and dielectric properties of poly(vinylacetate)/lead oxide composites

Optical and dielectric properties of poly(vinylacetate)/lead oxide composites

Thermal and structural studies on TeO2 substituted (PbO)0.5(P2O5)0.5 glasses

Structural Investigations of Cr3+ Ions Doped Alkali Lead Zinc Phosphate Glasses

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