Influence of alkaline earth oxides (R=Ca, Sr and Ba) on spectroscopic and dielectric studies of iron doped RO–Na2O–B2O3 glasses

Luminescence investigations of rare earth doped lead-free borate glasses modified by MO (M = Ca, Sr, Ba)

“…Further studies for RO-Na 2 O-B 2 O 3 glasses indicate the gradual increase in theoretical optical basicity from 0.489 (CaO) to 0.497 (SrO) and 0.509 (BaO), suggesting an increase of localized donor pressure on cations of glass matrix. In other words, the covalence of the glass-network decreases in CaO / SrO / BaO direction [39]. The same correlation is well observed between the glass transition temperature T g determined from DSC curves and the covalent/ionic nature of the glass-network.…”

“…It was also stated that the measured density of RO-Na 2 O-B 2 O 3 glass (where R ¼ Ca, Sr, Ba) is gradually increased by the substitution of CaO with SrO and BaO, and this result is expected due to replacement of a lighter cation by heavier one, since the density of a glass is sensitive to the ionic size and atomic weight. When CaO is substituted by SrO or BaO in the glass samples an increase in the glass density is seen followed by an increase in the molar volumes which suggest that the glass-network become less compact [39]. Further studies for RO-Na 2 O-B 2 O 3 glasses indicate the gradual increase in theoretical optical basicity from 0.489 (CaO) to 0.497 (SrO) and 0.509 (BaO), suggesting an increase of localized donor pressure on cations of glass matrix.…”

Novel Multicomponent Titanate-Germanate Glasses: Synthesis, Structure, Properties, Transition Metal, and Rare Earth Doping

“…Systematic studies clearly indicate that the effect of modifier oxides on emission properties of rare earth ions in different glass matrices is significant [15]. Influence of modifier oxides M 2 O where M denotes Li, Na, K, Rb, Cs [16], MO where M = Ca, Sr, Ba [17,18], M 2 O 3 where M = Al or Ga [19] and MO 2 where M = Te, Ge, Si [20] on local Materials 2020, 13, 4422 2 of 13 structure of glasses and their multifunctional properties and potential applications has been presented and discussed. Special attention has been paid to germanate glasses with different glass-modifiers.…”

Influence of MO/MF2 modifiers (M = Ca, Sr, Ba) on spectroscopic properties of Eu3+ ions in germanate and borate glasses

“…However, spectroscopic properties for mentioned above glass systems containing various divalent alkaline glass modifiers were not studied in details. The effect of modifiers such as MgO, BaO and CaO on electrical, dielectric as well as spectroscopic properties of iron doped to RO-Na 2 O-B 2 O 3 glasses [28] were investigated. Also, silicate glasses containing different alkaline earth fluoride (CaF 2 , SrF 2 , and BaF 2 ) were prepared and their crystallization behavior was investigated using non-isothermal kinetics based on differential scanning calorimetry analysis (DSC) [29].…”