Optical absorption, infrared and differential thermal analysis studies of borotellurite glass containing nickel

Khaled, M. A.; El-Zahed, H.; Fayek, S.A.; El-Ocker, M. M.

doi:10.1016/0254-0584(94)90170-8

Cited by 14 publications

(7 citation statements)

References 7 publications

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“…Tellurite, borate and borotellurite glasses have been widely investigated for their scientific interest and practical applications [1][2][3][4][5]. Borate glasses are known for having high thermal stability, high chemical durability, good solubility of rare-earth ion and also for their ease of synthesis [4], [6] and [7].…”

Section: Introductionmentioning

confidence: 99%

“…Borate glasses are known for having high thermal stability, high chemical durability, good solubility of rare-earth ion and also for their ease of synthesis [4], [6] and [7]. Tellurite glasses have lower phonon energy if compared to phosphates and silicates glasses, large infrared transparency, good thermal and mechanical stability, good chemical durability, low melting temperature, high refractive index, high dielectric constant and suitability as a host matrix to dopant action [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. These features make tellurite glasses promising candidates for photonic applications, such as fiber in optical communication, window materials and up-conversion laser.…”

Section: Introductionmentioning

confidence: 99%

“…These features make tellurite glasses promising candidates for photonic applications, such as fiber in optical communication, window materials and up-conversion laser. The addition of tellurium oxide to another glass former, such as B 2 O 3 , can lead to the production of interesting structural units that affect the physical properties of the glass network [2] and [18].…”

Section: Introductionmentioning

confidence: 99%

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Ultrasonic relaxation of some CdO boro-tellurate glasses

Gaafar

Mahmoud

2016

Can. J. Phys.

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50B2O3–(50-x)TeO2–xCdO glass system, with x = 0, 10, 20, 30, 40, and 50 mol% have been prepared, to measure the longitudinal ultrasonic attenuation at frequencies of 2, 4, 6, and 14 MHz in the temperature range from 120 to 300 K. Well-defined broad peaks of the absorption curves were observed at different temperatures depending on the glass composition and the operating frequency. The maximum peaks shifted to higher temperatures with the increase of the operating frequency implying the presence of some kind of relaxation process. This process is suggested as due to the thermally activated relaxation process. The variation of the average activation energy of the process mainly depends on the CdO mol% content. Such dependence was analyzed in terms of the loss of standard linear solid type, with low dispersion and a broad distribution of Arrhenius type relaxation with temperature independent relaxation strength. The obtained acoustic activation energy values were quantitatively interpreted in terms of the number of loss centers (number of oxygen atoms that vibrate in the double well potential).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultrasonic relaxation of some CdO boro-tellurate glasses

Gaafar

Mahmoud

2016

Can. J. Phys.

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“…The addition of tellurite to any other glass former or network modifier, such as B 2 O 3 , is of scientific and practical interest and may lead to the formation of interesting structural units that affect the physical properties of the glass network [5]. As reported earlier, the boron coordination number in the borate glass changed from three to four as more alkaline content was added into the system where the network linkage was increased.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Remelting on the Physical Properties of Borotellurite Glass Doped with Manganese

Hashim

Sidek

Halimah

et al. 2013

IJMS

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A systematic set of borotellurite glasses doped with manganese (1–x) [(B2O3)0.3(TeO2)0.7]-xMnO, with x = 0.1, 0.2, 0.3 and 0.4 mol%, were successfully synthesized by using a conventional melt and quench-casting technique. In this study, the remelting effect of the glass samples on their microstructure was investigated through density measurement and FT-IR spectra and evaluated by XRD techniques. Initial experimental results from XRD evaluation show that there are two distinct phases of glassy and crystallite microstructure due to the existence of peaks in the sample. The different physical behaviors of the studied glasses were closely related to the concentration of manganese in each phase. FTIR spectra revealed that the addition of manganese oxide contributes the transformation of TeO4 trigonal bipyramids with bridging oxygen (BO) to TeO3 trigonal pyramids with non-bridging oxygen (NBO).

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“…The formation of glass on two glass formers interest both scientific and practical locale. The structural network will be perturbed and may lead to the formation of new structural units [1,2]. Glass forming substances are fall into two categories of inorganic compounds containing bonds which are partially ionic and partially covalent, and, inorganic or organic compounds which form chain structures with covalent bonds within the chains and van der Waals’ bonds between the chains.…”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Properties of Lead-Boro-Tellurrite Glasses Induced by Gamma-Ray

Mustafa

Kamari

Yusoff

et al. 2013

IJMS

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Spectrophotometric studies of lead borotellurite glasses were carried out before and after gamma irradiation exposure. The increasing peak on the TeO4 bi-pyramidal arrangement and TeO3+1 (or distorted TeO4) is due to augmentation of irradiation dose which is attributed to an increase in degree of disorder of the amorphous phase. The structures of lead tellurate contain Pb3TeO6 consisting of TeO3 trigonal pyramid connected by PbO4 tetragonal forming a three-dimensional network. The decrease of glass rigidity is due to irradiation process which is supported by the XRD diffractograms results. The decreasing values of absorption edge indicate that red shift effect occur after irradiation processes. A shift in the optical absorption edge attributed to an increase of the conjugation length. The values of optical band gap, Eopt were calculated and found to be dependent on the glass composition and radiation exposure. Generally, an increase and decrease in Urbach’s energy can be considered as being due to an increase in defects within glass network.

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Optical absorption, infrared and differential thermal analysis studies of borotellurite glass containing nickel

Cited by 14 publications

References 7 publications

Ultrasonic relaxation of some CdO boro-tellurate glasses

Ultrasonic relaxation of some CdO boro-tellurate glasses

The Effect of Remelting on the Physical Properties of Borotellurite Glass Doped with Manganese

Structural and Optical Properties of Lead-Boro-Tellurrite Glasses Induced by Gamma-Ray

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