Spectroscopic investigation of some lead phosphate oxide glasses containing manganese ions

Bratu, Ioan; Ardelean, I.; Barbu, A.; Mih, V.; Maniu, Dana; Botezan, G

doi:10.1016/s0022-2860(98)00940-5

Cited by 25 publications

(13 citation statements)

References 11 publications

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“…5. Bratu et al [69] have investigated the IR spectra of phosphate glasses containing varying MnO content, and have arrived to the conclusion that at the MnO content (≤3 mol%) the IR bands are observed to represent phosphate chains and the band assignment in the 400-550 cm −1 range are difficult to correctly specify because of the superposition of the PbO and MnO absorption bands. 3.6 Effect of Gamma Irradiation on IR Absorption Spectra Figure 6 illustrates the IR absorption spectra of the studied undoped and 3d-doped samples after being subjected to a total gamma dose of 5 M rads (5×10 −4 Gy).…”

Section: The Studied Lead Silicate Glass Is Assumed By Dementioning

confidence: 99%

UV-Visible and IR Spectroscopic Studies of Gamma Irradiated Transition Metal Doped Lead Silicate Glasses

Khalil

ElBatal

Hamdy

et al. 2010

Silicon

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Lead silicate (LS) glasses of the basic composition PbO 75%, SiO 2 25% together with samples containing (∼0.1%) of transition 3d metal oxides (Ti→Cu) were prepared. UV/VIS optical analysis for as prepared and after successive gamma irradiated samples were used to shed more light on the structural modifications that occur due to different dopants and different irradiation doses. The UVVis. spectral analysis for undoped glass shows induced absorption bands at 205-400 nm which are assumed to be correlated with the base host glass and dopant transition metal ion doped glasses and dose of irradiation. The positions of the bands are observed to change slightly by gamma irradiation due to the combined effect of induced defects from the host base glass or the transition metal added. Gamma irradiation is observed to cause a decrease in the intensities of the IR absorption bands of the prepared samples accompanied by losing sharpness. These features are related to more amorphicity or disorder by irradiation or to the possible changes in bond angle or bond length in the building groups arrangement.

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Section: The Studied Lead Silicate Glass Is Assumed By Dementioning

confidence: 99%

UV-Visible and IR Spectroscopic Studies of Gamma Irradiated Transition Metal Doped Lead Silicate Glasses

Khalil

ElBatal

Hamdy

et al. 2010

Silicon

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“…The difference between these levels is higher than the transition energy at 9.205 GHz microwave frequency and hence the intensity of this signal is expected to be low as observed. The intensity ( ) of the EPR signal is assumed to be proportional to the product of the peak-to-peak height (I) and the square of its width ( B) [22]:…”

Section: Esr Spectramentioning

confidence: 99%

“…These ions exist in different valence states with different coordinations in glass matrices, for example, as Mn 3+ in borate glasses with octahedral coordination whereas in silicate and germinate glasses as Mn 2+ with both tetrahedral and octahedral environment [22]. Both tetrahedral and octahedral Mn 2+ ions have been found to exhibit luminescence emission in the green and red regions, respectively, in several glasses [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and dielectric studies on MnO doped PbO–Nb2O5–P2O5 glass system

Mohan

Reddy

Jayasankar

et al. 2008

Journal of Alloys and Compounds

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“…In Mn-/ZnCl 2 -doped glasses in which both manganese and zinc are in divalent state [32,33], formation of P-OMn or Zn bonds would take place between two different phosphate chains of sodium phosphate glass, whereas in FeCl 3 -doped glasses, probably the formation of P-O-Fe bond takes place between three different phosphate chains [4]. However, in FeCl 3 -doped glasses, the presence of both Fe (II) and Fe (III) states are expected to play different structural roles as such strong cross-linking of the phosphate chains both by Fe 2+ and Fe 3+ ions have been proposed [34].…”

Section: Resultsmentioning

confidence: 99%

Role of Fe, Mn, and Zn ions as dopants on the electrical conductivity behavior of sodium phosphate glass

Das

Singh²,

Srivastava

et al. 2008

Ionics

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Sodium phosphate glass undoped and doped with different concentrations of chlorides of iron, manganese, and zinc were prepared by melt quenching. The synthesized glasses were characterized by elemental analysis, X-ray diffraction, infrared (IR) spectroscopy, differential scanning calorimetry, and electrical conductivity studies. The undoped sodium phosphate glass (Na 2 O-P 2 O 5 ) has low electrical conductivity σ compared to all doped glasses except for 10% FeCl 3 -doped samples for which σ is found to be the lowest, and the trend isThe Na 2 O-P 2 O 5 -5% ZnCl 2 , Na 2 O-P 2 O 5 -5% MnCl 2 and Na 2 O-P 2 O 5 -1% FeCl 3 glassy systems yielded maximum σ values. These results are explained on the basis of changes in the structure of sodium phosphate glass matrix by the addition of Fe, Mn, and Zn ions based on IR spectra and DSC studies.

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Spectroscopic investigation of some lead phosphate oxide glasses containing manganese ions

Cited by 25 publications

References 11 publications

UV-Visible and IR Spectroscopic Studies of Gamma Irradiated Transition Metal Doped Lead Silicate Glasses

UV-Visible and IR Spectroscopic Studies of Gamma Irradiated Transition Metal Doped Lead Silicate Glasses

Spectroscopic and dielectric studies on MnO doped PbO–Nb2O5–P2O5 glass system

Role of Fe, Mn, and Zn ions as dopants on the electrical conductivity behavior of sodium phosphate glass

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