Abstract
The melt‐quenching technique was used to produce 39CdO–10Al2O3‐(51‐x) P2O5: xMnO glasses (x = 0, 0.1, 0.2, 0.3, and 0.4 wt.%). Various stability factors were calculated and presented from DTA analysis. The stability of the glass network appears to increase with the increase of MnO concentration, according to the findings. IR spectral analysis of these glasses exhibited several symmetrical and asymmetrical bands due to phosphate groups. The observed change in these band intensities with the rise in MnO concentrations, ranging from 0.1 wt.% to 0.4 wt.%, shows an increase in the stability of the glass network. Optical absorption analyses of these glasses revealed an absorption band that shifted from 500 to 488 nm as the concentration of manganese oxide (MnO) increased from 0.1 wt.% to 0.4 wt.%, indicating that Mn2+ ions were gradually converted into Mn3+ ions. EPR spectra of these glasses were characterized by two signals due to Mn2+ and Mn3+ ions. Observations on these signal intensity variations revealed an increase in stability of the glass network with the increase of MnO concentration from 0.1 wt.% to 0.4 wt.%. Parameters, which describe the insulating characteristics, for example, dielectric constant, ε, dielectric loss, tan δ, and AC conductivity σac, were determined in relation to frequency (103 Hz to 105 Hz) and temperature (20°C to 400°C) and presented in the dielectric analysis of these glasses.
Highlights
Academic Editor: Samson Jerold Samuel Chelladurai e melt-quenching technique was used to produce 39CdO–10Al2O3-(51-x) P2O5: xMnO glasses (x 0, 0.1, 0.2, 0.3, and 0.4 wt.%)
Various stability factors were calculated and presented from Differential ermal Analysis (DTA) analysis. e stability of the glass network appears to increase with the increase of manganese oxide (MnO) concentration, according to the findings
E main objective of this paper is to integrate manganese ions and their impact on structural integrity and insulating character of CdOAl2O3-P2O5: MnO glasses through a thorough investigation of dielectric constant εl, loss tan δ, and AC conductivity σac within the spectrum of frequency 103 Hz to 105 Hz as well as within the temperature range 20–400°C
Summary
Effect of Manganese Ions on Spectroscopic and Insulating Properties of Aluminophosphate Glasses. E stability of the glass network appears to increase with the increase of MnO concentration, according to the findings. E observed change in these band intensities with the rise in MnO concentrations, ranging from 0.1 wt.% to 0.4 wt.%, shows an increase in the stability of the glass network. EPR spectra of these glasses were characterized by two signals due to Mn2+ and Mn3+ ions Observations on these signal intensity variations revealed an increase in stability of the glass network with the increase of MnO concentration from 0.1 wt.% to 0.4 wt.%. Parameters, which describe the insulating characteristics, for example, dielectric constant, ε, dielectric loss, tan δ, and AC conductivity σac, were determined in relation to frequency (103 Hz to 105 Hz) and temperature (20°C to 400°C) and presented in the dielectric analysis of these glasses. Addition of Al2O3 to phosphate glasses improves their chemical durability and modifies their physical properties for more commercial applications [9, 10]
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