Optical absorption of gamma-irradiated lithium-borate glasses doped with different transition metal oxides

Marzouk, Samir Y.; Elalaily, N.A.; Ezz-Eldin, F.M.; Abd-Allah, W. M.

doi:10.1016/j.physb.2006.03.014

Cited by 58 publications

(21 citation statements)

References 22 publications

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“…the decrease in the inter-atomic spacing) which means that the TMO ions with octahedral coordination are involved in the glass network as modifiers by occupying the interstitial positions which cause the increase in the average number of the network bonds per unit volume. Therefore, it can be suggested that the TMO modification leads to an increase in the network connectivity of the studied glasses with the mentioned order, supporting the preliminary works [10][11][12][13][14] on lithium borate glasses doped with different transition metal oxides. CaO-TiO 2 glasses [25].…”

Section: Resultssupporting

confidence: 82%

“…Marzouk et al [13] have investigated the optical properties of binary Li 2 O-B 2 O 3 glasses doped with transition metals V 2 O 5 , Fe 2 O 3 , NiO, MnO 2 oxides. They observed that optical energy gap increases with transition metals as in the following order: V 2 O 5 < Fe 2 O 3 < NiO < MnO 2 , which indicates the increase in the connectivity of the glass network structure with the same order.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Doping by Different Transition Metals on the Acoustical Properties of Alkali Borate Glasses

et al. 2009

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Longitudinal and shear ultrasonic wave velocities were measured in binary Li 2 O-2B 2 O 3 glasses doped with different transition metal oxides (TMOs) (where TMO = V 2 O 5 , Fe 2 O 3 , Cr 2 O 3 , NiO, TiO 2 , MnO 2 and CuO) using pulse echo technique. Measurements were carried out at 4 MHz frequency and at room temperature. Elastic moduli and some other physical parameters such as acoustic impedance, Debye temperature, thermal expansion coefficient, and latent heat of melting were calculated. Results indicated that these parameters depend upon the TMO modifier i.e., the ionic radius of the transition metal cation. Quantitative analysis has been carried out, in order to obtain more information about the structure of these glasses, based on bond compression model, and the Makishima and Mackenzie model, i.e., the cation-anion bond of each TMO.

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Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Effect of Doping by Different Transition Metals on the Acoustical Properties of Alkali Borate Glasses

et al. 2009

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“…In order to increase the conductivity, some specific additives have been used, one of them being vanadium. In a recent work on borate glasses, vanadium dopant at a level of several percent was used for this purpose [2][3][4]; annealing of these materials resulted in modification of physical properties [2].…”

Section: Introductionmentioning

confidence: 99%

Combined X-Ray Diffraction and Absorption Study οf Crystalline Vanadium-Doped Lithium Disilicate

et al. 2010

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Structure of vanadium-doped lithium disilicate, Li2Si2O5 (Ccc2 space group) is studied. This crystalline phase is obtained by annealing of the doped lithium disilicate glass for 4 h at 550• C. X-ray diffraction and X-ray absorption near-edge structure analysis indicate location of vanadium atoms at Si sites. the lattice parameters are found to increase isotropically with increasing vanadium content. the valency of vanadium ions is discussed on the basis of X-ray absorption near-edge structure results.

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“…The densities of Li 2 O-B 2 O 3 glass were systematically measured by Archimedes principle 5) . The density was 2.0~2.3 g/cm 3 as shown in Table 1, and the photorefractive effect of the Li 2 O-B 2 O 3 glass scintillator measured by Spectroscopic ellipsometry (SE) was 1.48~1.55 as shown in Fig. 4.…”

Section: Resultsmentioning

confidence: 95%

“…Lithium and boron had larger neutron absorption cross-sections in the thermal neutron region. Lithium borate system has attracted considerable attention because this system contains many important nonlinear optics crystals, such as 2Li 2 [1][2][3][4] . In consideration of production costs and manufacturability, when the ratio between Li 2 O and B 2 O 3 is 8:2, it is sintered as L 2 0-B 2 O in the phase-change curve as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Properties Analysis of Lithium Borate Glass scintillators with Transition Metal Oxides

Bai

Kim

Chung

et al. 2008

Journal of Nuclear Science and Technology

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Nonlinear optics crystals are vital fundamental materials in optoelectronic technology, and also important for other fields, such as information, energy resource, medical application, etc. Lithium borate system has attracted considerable attention because this system contains many important nonlinear optics crystals, such as 2LiThis study fabricated a Li 2 O-B 2 O 3 glass scintillators with TMO (transition metal oxide) activators. The crystal structure of the fabricated Li 2 O-B 2 O 3 glass scintillators were confirmed, and experiments were conducted to study the absorption curve by density of the added activators, photorefractive effect, band-gap energy, emission spectrum and elemental composition. Also, the purpose of this study is to develop a glass scintillator with improved performance by improving on it through continued researches and experiments. Further researches on light efficiencies of the glass scintillator prepared in this study for neutron irradiation should be performed. In addition, by changing compositions for glass scintillator showing good performance, it will also be carried out to calculate compositional ratios for neutron glass scintillators and to prepare ones with best performance.

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Optical absorption of gamma-irradiated lithium-borate glasses doped with different transition metal oxides

Cited by 58 publications

References 22 publications

Effect of Doping by Different Transition Metals on the Acoustical Properties of Alkali Borate Glasses

Effect of Doping by Different Transition Metals on the Acoustical Properties of Alkali Borate Glasses

Combined X-Ray Diffraction and Absorption Study οf Crystalline Vanadium-Doped Lithium Disilicate

Fabrication and Properties Analysis of Lithium Borate Glass scintillators with Transition Metal Oxides

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