Optical properties of bismuth tellurite glasses doped with holmium oxide

Devaraja, C.; Gowda, G. V. Jagadeesha; Eraiah, B.; Keshavamurthy, K.

doi:10.1016/j.ceramint.2020.11.099

Cited by 32 publications

(17 citation statements)

References 39 publications

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“…The polaronic conductivity and ionic conduction outcomes were studied for alkali boro-tellurite glasses [41] and Bi2O3-B2O3-TeO2 [42] respectively. The eminent level application in optical fiber amplifiers, diffractometer display monitors, and planner waveguides [43,44] was reported on oxide glasses embedded with rare earth. Among available rare earth, the europium is a renowned element due to its significant optical device applications.…”

Section: Introductionmentioning

confidence: 99%

DC Conductivity of Heavy Metal Oxide (Bi2O3) Boro-Tellurite Glasses: Effect of Eu2O3

Devaraja¹,

Gowda²

2022

J Met Mater Miner

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A novel investigation on structural and DC conductivity of Eu2O3 activated heavy metal oxide boro-tellurite (BBTE) glasses were analyzed. The boro-bismuth-tellurite glass samples doped with europium trioxide were fabricated by the conventional melt quenching method. The microstructural and structural studies of the glasses have been done by scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. The DC conductivity of the BBTE samples has been studied at the frequency range 40Hz-6MHz and in the temperature range 303-453K. The XRD and SEM, confirm the non-crystalline and homogeneous properties of prepared glasses. The DC conductivity of glasses obeys Arrhenius behavior and DC conductivity decreases with increasing Eu2O3 concentration. A very less amount of DC conductivity was noticed in glasses with various temperatures and it is due to less availability of oxide ions.

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Section: Introductionmentioning

confidence: 99%

DC Conductivity of Heavy Metal Oxide (Bi2O3) Boro-Tellurite Glasses: Effect of Eu2O3

Devaraja¹,

Gowda²

2022

J Met Mater Miner

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“…Because of exceptional advantages as infrared detectors, high luminescence, optical communications and high-density memory storage devices, RE doped glass materials have sparked significant interest for various research explorations. 22,23,34 Bi 3+ sites in bismuth oxide-based glasses have been shown to be suitable sites for rare earth incorporation owing to the similarity in their valence state and ionic size. Lower phonon energy of these glasses also contributes to act as excellent host for rare earth ions leading to improved photoluminescence.…”

Section: Optical Applications Of Bismuth Tellurite Glassesmentioning

confidence: 99%

“…Glasses with chemical composition 85TeO 2 -(15-y)Bi 2 O 3 -y Ho 2 O 3 , where y= 0.0, 0.1, 0.2, 0.3, 0.4 and 0.5 mol % were synthesized by Devaraja et al 34 The glass stability was modified due to the creation of NBO atoms. UV-Visible spectral investigations established that the refractive index of the glass is dependent on the concentration of holmium oxide ions, with the maximum value observed at 0.5 mol% of Ho 2 O 3 .…”

Section: Optical Applications Of Bismuth Tellurite Glassesmentioning

confidence: 99%

Review—Recent Advances in Bismuth Tellurite Glasses for Photonic and Radiation Shielding Applications

Blessy Kamalam,

Manikandan

2023

ECS J. Solid State Sci. Technol.

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The inherent properties of heavy metal oxide glasses have led to their widespread applications in various domains including lasers, optical fibers, optoelectronics, and radiation shielding materials. Tellurium oxide and bismuth oxides are conditional glass forming heavy metal oxides which, when combined, suitably yield significant improvement in the whole system. Lower phonon energy of tellurite helps in aiding broader transmission and lasing properties, while the ability of bismuth ions to reside in various valence states aids in incorporation of optically active rare earth ions in these glasses. The near infrared emission characteristic of bismuth ions could be improved by co-doping with rare earth ions to improve the emission and consequently their applications as photonic devices. Higher density of these oxides helps in increasing the radiation shielding ability, thereby making them suitable replacement materials for lead based toxic compounds.

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“…The decreasing values of optical bandgap and the rise in the refractive index affected the metallization criterion value of the GO coated TNd (NPs) glasses [36]. From the literature, the obtained values show that the GO coated TNd (NPs) glass system glasses have a great deal of promise for use in laser and non-linear optical applications [30], [37], [38].…”

Section: Metallization Criterionmentioning

confidence: 99%

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

Shaari¹,

Azlan²,

Azlina³

et al. 2022

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The versatility of graphene oxide (GO) as coating materials on the glass surface is a new revolution in the advanced glass era. In this work, GO liquid solution was prepared by using electrochemical exfoliation in an electrolyte solution assisted by different surfactants. Meanwhile, a glass series was prepared by using the conventional meltquenched technique. A low-cost and simple spray deposition technique was used to deposit the GO on the glass sample. The obtained glass series was denoted as GO coated TNd (NPs), meanwhile, the uncoated glass was labelled as uncoated TNd (NPs). The linear optical properties of GO coated TNd (NPs) glass series was determined using UVVis spectrophotometer and utilizing the Lorentz-Lorentz equation to determine the value of polarizability. X-ray diffraction spectra revealed the amorphous structural characteristics of the glass series. The SEM morphological image revealed the variation of GO distribution on the glass surface due to the agglomeration and inhomogeneity of GO distribution on the glass surface. The homogeneity of GO distribution on the glass surface is negligible in this work as we focus solely on the effect of GO on glass properties. According to the observations, the value of GO-coated TNd (NPs) is in the range 3.4531- 3.8549 Å and uncoated TNd (NPs) is in the range 2.709- 2.774 Å. Meanwhile, the optical basicity value ranges from 1.220 to 1.262. These results demonstrate that the polarizability of oxide ions and optical basicity values of the GO coated TNd (NPs) glass series was higher than the uncoated TNd (NPs) glass. The metallization criterion for the GO-coated TNd (NPs) glass system is in the range of 0.3 < M < 0.4. Based on these results, the obtained glasses are promising in linear optical glass fibre.

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Optical properties of bismuth tellurite glasses doped with holmium oxide

Cited by 32 publications

References 39 publications

DC Conductivity of Heavy Metal Oxide (Bi2O3) Boro-Tellurite Glasses: Effect of Eu2O3

DC Conductivity of Heavy Metal Oxide (Bi2O3) Boro-Tellurite Glasses: Effect of Eu2O3

Review—Recent Advances in Bismuth Tellurite Glasses for Photonic and Radiation Shielding Applications

Oxide ion polarizability, optical basicity, and metallization criterion of GO-coated Nd2O3 (NPs) - TeO2 glass for linear optical fibre

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