Spectroscopic and EPR studies on PbO–Y2O3–P2O5 glasses doped with molybdenum ion

Rao, B. Lakshmana; Babu, Y.; Prasad, S.V.G.V.A.

doi:10.1016/j.physb.2013.08.011

Cited by 7 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The characteristic EPR parameters are gathered in Table . These experimental EPR values indicate an axially compressed 6-coordinated environment for the Mo 5+ ions. , The partial disappearance of the hyperfine structure is observed with the increase of MoO 3 concentration (Figure ), due to the dipolar interaction between the Mo 5+ ions. From the quantification of the EPR spectra, it has been shown that our glasses contain a very low amounts of reduced molybdenum ions (<1% of total Mo), as previously reported in similar glass systems. , …”

Section: Resultsmentioning

confidence: 71%

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

et al. 2016

View full text Add to dashboard Cite

Insertion of MoO 3 oxide in the mixed borophosphate glass network has been analyzed for the first time by advanced magnetic resonance spectroscopies. For the first time, the xMoO 3 -(100x)(50PbO-10B 2 O 3 -40P 2 O 5 ) composition line has been investigated by 1D ( 11 B, 31 P, 95 Mo) and 2D-correlation NMR ( 11 B DQ-SQ, 11 B( 31 P) D-HMQC) at high magnetic field (18.8 T). The set of data allowed for analyzing both local and medium range orders and identifying the modifications in the BOB and/or BOP mixing induced by the MoO 3 insertion. In a second step, continuous wave EPR has been used to detect the presence of Mo 5+ ions, resulting from partial reduction of Mo 6+ during the melting stage, and the chemical environment around the Mo 5+ species has been documented for the first time by pulsed EPR technique (HYSCORE). Altogether, the data contribute to a better understanding of the glass network modifications induced by the MoO 3 insertion, including the nonlinear evolution of the glass transition temperature that has been explained by a modification of the glass network nature.

show abstract

Section: Resultsmentioning

confidence: 71%

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

et al. 2016

View full text Add to dashboard Cite

show abstract

Theoretical studies on the g factors, optical absorption, and their concentration variations for Mo⁵⁺ in 40PbO–(10 − x)Y₂O₃–50P₂O₅:xMoO₃ glass

Zhou

Dong

Wang

et al. 2021

Magnetic Reson in Chemistry

View full text Add to dashboard Cite

On the basis of the higher order perturbation formulas of g factors for a 4d 1 group in tetragonally compressed octahedra, the g factors, optical absorption, local structure, and their concentration dependences of pentavalent molybdenum in 40PbO-(10 À x)Y 2 O 3 -50P 2 O 5 :xMoO 3 (1 ≤ x ≤ 5 mol%) glass are uniformly investigated. The experimental optical absorption spectra and g factors for Mo 5+ at various concentrations x are reasonably regenerated by using the reasonable exponential concentration functions of the cubic field parameter D q , covalent factor N, and relative tetragonal compression ratio ρ. The tetragonal compression ratio ρ due to the Jahn-Teller effect was found in the range of 3.8% to 4.2%. The decreasing trend of D q and N and the increasing trend of ρ with concentration can be interpreted as the fact that the variations of MoO 3 and Y 2 O 3 concentrations lead to the modulations of local structure and electron cloud distribution around Mo 5+ , associated with the adjustment of the glass network. The concentration dependence of optical basicity is also analyzed for the above glass systems.

show abstract

Structure and emission properties of P2O5–Na2O–Pb3O4-MO, (MO = SrO, Y2O3, MoO3, Ag2O, CdO and SnO) glass and glass ceramics

Ahmed

El-Ghamaz

Waly

2022

Ceramics International

View full text Add to dashboard Cite

Spectroscopic and EPR studies on PbO–Y2O3–P2O5 glasses doped with molybdenum ion

Cited by 7 publications

References 44 publications

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Theoretical studies on the g factors, optical absorption, and their concentration variations for Mo⁵⁺ in 40PbO–(10 − x)Y₂O₃–50P₂O₅:xMoO₃ glass

Structure and emission properties of P2O5–Na2O–Pb3O4-MO, (MO = SrO, Y2O3, MoO3, Ag2O, CdO and SnO) glass and glass ceramics

Contact Info

Product

Resources

About

Spectroscopic and EPR studies on PbO–Y2O3–P2O5 glasses doped with molybdenum ion

Cited by 7 publications

References 44 publications

Insertion of MoO3in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Insertion of MoO3in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Theoretical studies on the g factors, optical absorption, and their concentration variations for Mo5+ in 40PbO–(10 − x)Y2O3–50P2O5:xMoO3 glass

Structure and emission properties of P2O5–Na2O–Pb3O4-MO, (MO = SrO, Y2O3, MoO3, Ag2O, CdO and SnO) glass and glass ceramics

Contact Info

Product

Resources

About

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Insertion of MoO₃in Borophosphate Glasses Investigated by Magnetic Resonance Spectroscopies

Theoretical studies on the g factors, optical absorption, and their concentration variations for Mo⁵⁺ in 40PbO–(10 − x)Y₂O₃–50P₂O₅:xMoO₃ glass