Preparation and characterization of materials in the system xCuO-(50-x) CdO-50B 2 O 3

Morsi, Reham M.M.; Ibrahim, S.

doi:10.1016/j.ceramint.2017.03.166

Cited by 14 publications

(5 citation statements)

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“…Further symmetry lowering from D 4h to, e.g., C 2v creates a new energy level sequence: B 1 ( x 2 − y 2 ), A 1 ( z 2 ), A 1 ( xy ), A 2 ( xz ) and B 2 ( yz ). Therefore, a complex spectral band is expected for the CuO 6 distorted octahedron appearing in the copper phytate, similarly to the other Cu(III) compounds [31–37]. Indeed, the electron absorption spectra of the IP6Cu, IP6Cu 2 and IP6Cu 3 complexes shown in Fig.…”

Section: Resultsmentioning

confidence: 86%

Spectroscopic properties and molecular structure of copper phytate complexes: IR, Raman, UV–Vis, EPR studies and DFT calculations

et al. 2018

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The copper phytate IP6Cu, IP6Cu 2 and IP6Cu 3 complexes were synthesized changing the phytate to metal mole ratio. The obtained products have been characterized by means of chemical and spectroscopic studies. Spectroscopic ATR/IR, FT-Raman, UV–Vis, EPR and magnetic measurements were carried out. The structures of these compounds have been proposed on the basis of the group theory and geometry optimization taking into account the shape and number of the bands corresponding to the stretching and bending vibrations of the phosphate group and metal–oxygen polyhedron. The role of the inter- and intra-hydrogen bonds in stabilization of the structure has been discussed. EPR studies showed that a local rhombic symmetry of copper ions appears in the studied phytates. Dominant interactions show antiferromagnetic properties depending on the content of paramagnetic ions. Electronic supplementary material The online version of this article (10.1007/s00775-018-1622-0) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 86%

Spectroscopic properties and molecular structure of copper phytate complexes: IR, Raman, UV–Vis, EPR studies and DFT calculations

et al. 2018

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“…The extinction coefficient (k) was calculated by using the following relation and the values are shown in Fig.8 [25,[40][41][42][43] K = αλ/4π (9) Where α is absorption coefficient, λ is wavelength.…”

Section: R= (4)mentioning

confidence: 99%

“…Finally, the optical band gap, Eg, of the borate glass was calculated using the relation [47,48] ahʋ = B (hʋ-Eg) 2 (12) Where, B is constant and α is the absorption coefficient that was calculated by using the relation [25,43,49] (αʋ) = (1/d) ln (lo/l) = 2.303 (A/d)…”

Section: R= (4)mentioning

confidence: 99%

“…Sodium borate glass with different modifiers are both of scientific and technological interest due to their structural peculiarities [5]. B 2 O 3 glass is formed from BO 3 triangles that composed of three -membered (boroxol) rings [9]. Addition of some oxides to the glasses lead to a lot of new applications and improve the glass optical, electrical and physical properties [10,14].…”

Section: Introductionmentioning

confidence: 99%

“…The introduction of oxide as a modifier to boric oxide glass can create structural changes and modify the properties of glass matrix. The modifier oxide changes a part of the BO 3 triangles to BO 4 tetrahedral thus cracking bridging oxygen bonds to create non bridging oxygen (NBOs) [11][12][13]. Doping transition metals ions improve the physical, electrical [14] and optical properties of the glass [15].…”

Section: Introductionmentioning

confidence: 99%

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Optical spectroscopic study of cobalt oxide doped boron glass and its ion effect on optical properties

et al. 2019

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I N this paper, the optical spectroscopic properties of Co 3 O 4 doped borate glass with chemical composition: 60 B 2 O 3 , 30 ZnO, (10-x) Na 2 O, x Co 3 O 4 , (where x= 0 (S0), 0.1 (S1), 0.2 (S2), 0.3 (S3), 0.4 (S4), 0.5 (S5) mol %) were investigated. The glass samples (S0-S5) were prepared by conventional melt quenching technique. The formability of all prepared glass samples was examined by XRD and UV-visible spectroscopy techniques. The amorphous nature of glass structure was confirmed by XRD-technique. Archimedes method was used to measure density and calculate the molar volume of the prepared glass composition. It was observed that the density and molar volume were found to be increased by increasing concentration of Co 3 O 4. The optical spectroscopic characteristics of the obtained borate glass have been carried out over the whole range (190-2500nm) for studying the bandpass glass filter and UV cutoff. Through experimental data it was observed that the optical energy gap decreased from 3.25 to 3.03 eV by increasing doped cobalt oxide contents on borate glass. Furthermore, UV cutoff regions increased by increasing concentration of cobalt oxide. The effect of doping concentration on the optical properties of the prepared glass samples (refractive index, extinction coefficient, permittivity, dielectric constants, electric susceptibility and polarizabilities) was determined and studied.

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The role of sodium fluoride on CdO-B2O3 glasses doped with chromium ions

et al. 2019

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Preparation and characterization of materials in the system xCuO-(50-x) CdO-50B 2 O 3

Cited by 14 publications

References 50 publications

Spectroscopic properties and molecular structure of copper phytate complexes: IR, Raman, UV–Vis, EPR studies and DFT calculations

Spectroscopic properties and molecular structure of copper phytate complexes: IR, Raman, UV–Vis, EPR studies and DFT calculations

Optical spectroscopic study of cobalt oxide doped boron glass and its ion effect on optical properties

The role of sodium fluoride on CdO-B2O3 glasses doped with chromium ions

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