| Autor: |
Hanamar, Kavita, Hegde, B. G., Kolavekar, S. B., Ayachit, N. H., Pramod, A G, Keshavamurthy, K, Anandalli, Mallikarjun H, Bhajantri, R. F. |
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| Zdroj: |
Journal of Inorganic & Organometallic Polymers & Materials; Jun2023, Vol. 33 Issue 6, p1612-1620, 9p |
| Abstrakt: |
The influence of samarium concentration on the structural, physical and spectroscopic attributes of lithium zinc borate-based glasses with the composition (10-x)Li2O-50ZnO-40B2O3-xSm2O3 (x = 0–4 mol%) is investigated in this study. The glass specimens were fabricated using the melt and quenching process. Their characteristics were explored using the X-ray diffractometer (XRD), UV-visible absorption, Fourier transform infrared (FTIR) spectroscopy and Fluorescence spectrophotometer. The study of XRD analysis demonstrated that the synthesized glass specimens were amorphous. The glass has strong BO3, BO4, OH bonds and other bond types as shown by the FTIR spectra. The prevalence of absorption peaks related to various transitions of the Sm3+ ion was observed in UV-visible absorption spectra. Judd-Ofelt (JO) spectral analyses of optical absorption spectra were performed to assess the three empirical intensity parameters Ω2, Ω4, and Ω6 in order to ascertain the local structure and bonding close to Sm3+ ions. The emission peak positions (λp), radiative transition probabilities (AR), effective bandwidths (∆λeff), stimulated emission cross-section (σemi), experimental lifetime (τrad) and branching ratio (βR) for the 4G5/2 → 6HJ (J = 5/2,7/2,9/2, and 11/2) transitions of the trivalent samarium ions were further revealed utilizing the calculated intensity parameters and emission spectra. The decay curve study was performed for all glass specimens to comprehend the mechanisms influencing the transfer of energy between Sm3+ ions. The findings of 4 mol% Sm2O3 containing LZB glass suggest that it might be beneficial for solid-state laser and orange-red LED applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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