Role of high energy Cr6+ optical transition induced by rare earth ion (La3+) in compositional-dependent borate glass

HY Morshidy, AR Mohamed, AA Abul-Magd… - Materials Chemistry and …, 2022 - Elsevier
In this contribution, borate glasses co-doped with La 2 O 3 and a fixed ratio of Cr 2 O 3 were
produced by the melt-quenching method. The role of La 2 O 3 on the glass characteristics …

Reevaluation of Cr6+ optical transitions through Gd2O3 do** of chromium-borate glasses

HY Morshidy, ZM Abd El-Fattah, AA Abul-Magd… - Optical Materials, 2021 - Elsevier
Chromium-doped borate glasses are appealing for potential optical applications as they
feature distinct optical transitions in the visible and ultraviolet spectral regimes. However …

Novel identification of ultraviolet/visible Cr6+/Cr3+ optical transitions in borate glasses

MA Hassan, F Ahmad, ZM Abd El-Fattah - Journal of alloys and compounds, 2018 - Elsevier
Chromium oxide-doped borate glasses with composition xP 2 O 5-(70-x) B 2 O 3-29.5 Li 2 O-
0.5 Cr 2 O 3 (x= 0.0, 0.5, 1.0, 1.2, 1.5 and 2.0 mol%) were prepared following the melt …

Optical spectroscopy of chromium doped bismuth-lithium borate glasses

AM Othman, ZM Abd El-Fattah, M Farouk… - Journal of non …, 2021 - Elsevier
The optical absorption, photoluminescence, and electron spin resonance spectroscopies
were used to investigate the effect of Bismuth oxide on a chromium doped borate glass …

Unraveling the hidden Urbach edge and Cr6+ optical transitions in borate glasses

MA Hassan, FM Ebrahim, MG Moustafa… - Journal of Non …, 2019 - Elsevier
Two alkaline-borate glass systems of composition x Li 2 O· 0.2 Cr 2 O 3·(99.8–x) B 2 O 3 (x=
20, 30 and 40 mol%) and y K 2 O·(20-y) Li 2 O· 0.2 Cr 2 O 3· 79.8 B 2 O 3 (y= 5, 10, 15 and …

Effect of the Cr6+ concentration in Cr-incorporated TiO2-loaded MCM-41 catalysts for visible light photocatalysis

B Sun, EP Reddy, PG Smirniotis - Applied Catalysis B: Environmental, 2005 - Elsevier
The activity of 25% TiO2-loaded various amounts of Cr-incorporated MCM-41 (25% TiO2/Cr-
MCM-41) was studied as a catalyst for photodegradation of 4-chlorophenol under visible …

The structural influence of chromium ions in lead gallium phosphate glasses by means of spectroscopic studies

GL Flower, MS Reddy, GS Baskaran, N Veeraiah - Optical materials, 2007 - Elsevier
PbO–Ga2O3–P2O5 glasses containing different concentrations of Cr2O3 ranging from 0 to
1.0 mol% were prepared. A number of studies viz., differential thermal analysis, infrared …

Exchange charge model of crystal field for 3d ions

MG Brik, NM Avram, CN Avram - Optical Properties of 3d-Ions in Crystals …, 2013 - Springer
In the second chapter of the book the authors present the results of theoretical studies ofthe
energy levels schemes of all 3dn (n= 1, 9) ionsin various crystals at the substitutionalsites …

Excited state spectroscopy of chromium ions in various valence states in glasses

C Koepke, K Wisniewski, M Grinberg - Journal of alloys and compounds, 2002 - Elsevier
The spectral properties of different types of chromium-activated glasses are shown,
discussed and interpreted. Chromium in four valence states, Cr3+, Cr4+, Cr5+ and Cr6+, is …

Vacuum referred binding energy of the single 3d, 4d, or 5d electron in transition metal and lanthanide impurities in compounds

EG Rogers, P Dorenbos - ECS Journal of Solid State Science and …, 2014 - iopscience.iop.org
The vacuum referred binding energy (VRBE) of the single electron in the lowest energy 3d
level of Sc 2+, V 4+, Cr 5+, the lowest 4d level of Y 2+, Zr 3+, Nb 4+, Mo 5+ and the lowest 5d …