Geçiş Metal Oksit Katkılı PbCl2-TeO2 Camların Yapısal ve Optik İncelenmesi

Bu çalışmada, iyi doğrusal olmayan optik özellikleri ve yüksek yarı iletkenlik potansiyelleri nedeniyle opto-elektronik uygulamalarda kullanım için elverişli sistemler olan geçiş metal oksit (GMO) katkılı tellürit camlar yapısal ve optik açıdan incelenmiştir. Yapılan deneysel çalışmalarda, PbCl2-TeO2 cam sistemine katkılandırılan Sb2O3, WO3, MoO3, Bi2O3, ZnO geçiş metal oksitlerinin camların fiziksel ve yapısal özelliklerine etkisi araştırılmış ve değişen GMO türü ile camların kızılötesi bölge optik geçirgenlik özelliklerinde meydana gelen değişimler incelenmiştir. Bu amaçla, (2x)GMO-(25-x)PbCl2-(75-x)TeO2, x = 0 ve 10 mol% (GMO: Sb2O3, WO3, MoO3, Bi2O3, ZnO) sistemine ait camların yoğunluk, molar hacim, oksijen molar hacim, oksijen paketlenme yoğunluğu, ortalama çapraz bağlanma yoğunluğu gibi fiziksel parametreleri belirlenerek camların yapısal özellikleri ile ilişkilendirilmiştir. Geçiş metal oksit katkısının PbCl2-TeO2 camların birim hacimdeki bağ sayısını arttırarak boşluk hacmini azalttığı ve yapıyı daha sıkı paketlenebilir hale getirdiği belirlenmiştir. Ayrıca FTIR analizleri ile camların kızılötesi bölgedeki geçirgenlik özellikleri incelenmiş ve GMO-PbCl2-TeO2 camların yüksek kızılötesi bölge geçirgenlik ve yüksek kızılötesi bölge geçirgenlik aralığı değerleri gösterdiği tespit edilmiştir

Structural and Optical Investigation of Transition Metal Oxide-Doped PbCl2-TeO2 Glasses

In the present study, structural and optical investigations of transition metal oxide (TMO)-doped tellurite glasses, which are promising glass matrices for opto-electronic applications due to their good non-linear optical properties and high semiconducting behavior, were realized. In the experimental studies, the effect of different transition metal oxides (Sb2O3 , WO3 , MoO3 , Bi2O3 , ZnO) on physical and structural properties of PbCl2-TeO2 glasses were determined and the changes in the infrared transmittance behavior of these glasses were investigated for different TMO-doped samples. For this purpose, physical investigation of glasses in the (2x)GMO–(25-x)PbCl2–(75-x)TeO2 , x = 0 and 10 mol% (GMO: Sb2O3 , WO3 , MoO3 , Bi2O3 , ZnO) system was realized by determining the density, molar volume, oxygen molar volume, oxygen packing density, average cross-link density and number of bonds per unit volume values. It was found that the addition of transition metal oxides provide a more tightly packed network by decreasing the excess free volume with increasing the number of bonds per unit volume. Accordingly, the structural changes in the glass network were determined and the infrared transmittance properties of the glasses were evaluated running FTIR analysis. It was also detected that GMO-PbCl2 -TeO2 glasses show high infrared transmission in a wide infrared range.

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