Correlation of Structure and Electrical Conductivity of CdI₂ Doped Silver Borophosphate Glass and Nanocomposite

Abstract

The structural and electrical properties of some CdI 2 doped silver borophosphate glasses and glass nanocomposites of compositions 0.2CdI 2 À 0.8(0.50Ag 2 O À 0.50(xB 2 O 3 À (1 À x)P 2 O 5 )), prepared by the melt quenching method, are reported in this paper. The X-ray diffraction study reveals the amorphous nature for the compositions x = 0À0.80 and partial crystalline nature for the composition x = 1. However, the transmission electron microscopic studies reveal the presence of some crystalline phases such as CdI 2 , β-AgI, and AgPO 3 for x = 0À0.80 and β-AgI, Ag 3 BO 3 , and CdI 2 for x = 1. The FTIR spectra reveal that the BO 4 units are predominant for x = 0.20À0.50. The BO 3 unit appears beyond the composition x = 0.20, and its population increases with the increase of B 2 O 3 content. The conductivity of the compositions increases (for x = 0À0.60), and the activation energy decreases with progressive substitution of B 2 O 3 in the glass network. However, the conductivity almost saturates for B 2 O 3 rich compositions (for x = 0.60À1). The ion dynamics of the compositions as well as other physical properties such as density, glass transition temperature, etc., have been correlated with the compositional variation of BO 4 and BO 3 units.

Structural investigation on silver phosphate glasses embedded with nanoparticles

“…The micrographs show crystalline phases dispersed in the glassy matrix. It has been noted that CdI 2 doped silver borophosphate glasses are also X-ray amorphous in nature, although several crystalline phases are embedded in the glass matrix [7].…”

The Influence of CoO/P2O5 Substitutions on the Structural, Mechanical, and Radiation Shielding of Boro-Phosphate Glasses

“…Good chemical durability characterizes these glasses, along with their mechanical stability, low refractive index, and thermal parameters either in preparation or characteristic temperatures (e.g., softening and glass transition temperatures). Moreover, multi-component boro-phosphate glasses with the Al 2 O 3 , Na 2 O, or transition metal oxides make these glasses good candidates for optical tools, rechargeable batteries, super-capacitors, photochromic windows, bioactive materials, and the immobilization of radioactive waste [ 3 , 4 , 5 , 6 , 7 ].…”

Electrodiffusion versus Chemical Diffusion in Alkali Calcium Phosphate Glasses: Implication of Structural Changes

“…Research in the field of ion transport in solid electrolytes currently receives ample attention due to its multitude of applications for energy storage or energy conversion, − but also for medical applications of bioactive glasses. − Often, the structure–function relation is not easy to comprehend, in particular in amorphous materials where structure properties like interatomic distances exhibit distributions rather than having fixed values. − In fact, the ion transport itself may lead to a modification of the local structure , such that different ions experience a different local potential landscape, which in turn influences their transport characteristics. Evidently, this is of particular relevance in ion-exchange studies …”