Correlation between Nanostructural and Enhanced Electrical Conductivity of Annealed 30V2O5–20Bi2O3–50P2O5 Glass

Structural and DC conductivity of annealed 30V2O5–20Bi2O3–50P2O5 traditional quenching melt glass is investigated. The as quenched with amorphous nature and crystallized formed phases of annealed samples are confirmed by X‐ray diffraction and differential scanning calorimeter (DSC) techniques. The average crystallite size of the present samples after crystallization at different temperatures and times is estimated to be about 47–74.9 nm. DSC analyses of the glasses indicate a prominent glass transition temperature at 669.9 K. Monoclinic bismuth phosphate phase is formed after annealing at 723 K for 2 h and completely disappeared at 923 K with the formation of orthorhombic vanadium phosphorus oxide and new bismuth phosphate monoclinic phase. The conductivity is discussed in conformity with Mott's theory. The crystallinity development reduces the grain boundaries which leads to the conductivity improvement. Structural and DC conductivity of annealed 30V2O5–20Bi2O3–50P2O5 traditional quenching melt glass is investigated. The average crystallite size of the annealed samples is estimated to be about 47–74.9 nm. Orthorhombic vanadium phosphorus oxide and monoclinic bismuth phosphate phases are formed after annealing at 923 K. The conductivity is discussed in conformity with Mott's theory.