The optical properties of trivalent rare earth ions (Er3+) doped borotellurite glass

Nurbaisyatul, E.S.; Azman, K.; Hashim, Ahmad Hariza; Razali, Wan Aizuddin Wan; Noranizah, A.; Alajerami, Y.S.M.

doi:10.1134/s0030400x14030163

Cited by 12 publications

(5 citation statements)

References 31 publications

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“…During the last decade, an increasing interest in TeO 2based matrices has risen, because of their remarkable properties. As compared with phosphate and silicate glasses, tellurite glasses have lower phonon energies [5,6], lower melting point temperature, larger infrared transparency, good thermal and mechanical stabilities, high chemical durability and larger refractive index [5,[7][8][9][10][11][12][13][14]. The addition of fluorine into the glass composition further decreases the matrix phonon energies (to typically ∼500 cm −1 ) and favors the formation of fluorinated nanocrystals in an oxide matrix.…”

Section: Introductionmentioning

confidence: 99%

Yb3+- and CaF2 nanocrystallites-containing oxyfluorogermanotellurite glass-ceramics

et al. 2019

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A new 30 GeO 2-30 TeO 2-15 ZnO-10 Na 2 CO 3-10 CaF 2-3 La 2 O 3-2 YbF 3 glass composition was synthesized and submitted to several heat treatments to provoke nanocrystallization in its bulk. The formation of nanocrystallites was evidenced by high resolution transmission electron microscopy and X-ray diffraction, and their nature and size was characterized. The spectroscopic and magnetic properties of the Yb 3+ ions dissolved in the glass and, presumably, in the nanocrystallites, were investigated by absorption and emission spectroscopies (including anti-Stokes emissions from Tm 3+ and Er 3+ impurities), fluorescence transients and magnetic susceptibility measurements. It was found that the Yb 3+ ions experimental lifetime and average effective magnetic moment, as well as Tm 3+ and Er 3+ ions anti-Stokes emission intensities, increase with increasing crystallization state of the initial glass.

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Section: Introductionmentioning

confidence: 99%

Yb3+- and CaF2 nanocrystallites-containing oxyfluorogermanotellurite glass-ceramics

et al. 2019

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“…The aforementioned peaks are almost similar with previous work for borate -and tellurite-based glass systems as reported by Sadeek et al, (2015) [16] and Sidek et al, (2009) [15], respectively. The broad peak center at 1300 cm -1 is attributed to the asymmetric stretching vibrations of B-O in the BO 3 unit with non-bridging oxygen from orthoborate, metaborate and pyroborate groups [21]. While the broad peak center at 1200 cm -1 was corresponding to asymmetric stretching of B-O bonds from BO 4 tetrahedral and orthoborate groups.…”

Section: Fig 4 Ftir Spectra For All Glassesmentioning

confidence: 96%

Gamma Ray Shielding Parameter of Barium-Boro-Tellurite Glass

AZURAIDA¹,

HALIMAH²,

ISHAK³

et al. 2020

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Boro-tellurite glasses have recently been attracting the attention of several researchers as a tremendous optical device and shielding material. In this work, we have synthesized borotellurite glasses with barium oxide (BaO) by melt quenching technique. The structural and shielding property changes after adding of barium oxide in boro-tellurite glass were studied using Fourier Transform Infrared (FTIR) and Lead Equivalent Thickness measurement (LET), respectively. The results show that the bismuth oxide increases glass density, changes the glass structure, and increases the radiation shielding properties. Changes in the glass structure are due to atomic rearrangements and formation of nonbridging oxygen (NBO). The density of boro-tellurite glass system increased when BaO content increased, which is due to the high molecular weight of BaO and the increasing number of non-bridging oxygen (NBO) atoms in the glass structure. In addition, the mass attenuation coefficient, μm of the glass system increases as BaO concentration increases and the half value layer, HVL and mean free path, MFP of 30BaBTe glass is better than some standard concretes.

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Section: Introductionmentioning

confidence: 99%

“…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]. 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].…”

Section: Introductionmentioning

confidence: 99%

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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The optical properties of trivalent rare earth ions (Er3+) doped borotellurite glass

Cited by 12 publications

References 31 publications

Yb3+- and CaF2 nanocrystallites-containing oxyfluorogermanotellurite glass-ceramics

Yb3+- and CaF2 nanocrystallites-containing oxyfluorogermanotellurite glass-ceramics

Gamma Ray Shielding Parameter of Barium-Boro-Tellurite Glass

Ultrasonic relaxation of some CdO boro-tellurate glasses

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