• Optical, mechanical and TEM assessment of titania-doped Bi2V1−𝑥Ti𝑥O$_{5.5−\delta}$ bismuth vanadate oxides

• # Fulltext

https://www.ias.ac.in/article/fulltext/boms/037/07/1647-1656

• # Keywords

Transmission electron microscopy; optical properties; ceramics; mechanical properties.

• # Abstract

Optical, mechanical and structural behaviors have been studied for titania-doped Bi2V1−𝑥Ti𝑥O$_{5.5−\delta}$ which are used as electrolytes for intermediate temperature fuel cells. Parameters like band gap ($E_{g}$), Urbach energy ($E_{u}$), refractive index, hardness (𝐻) and fracture strength (𝐾) have been calculated as a function of dopant concentration, i.e. 0.05 ≤ 𝑥 ≤ 0.2. Furthermore, analysis of transmission electron microscopy (TEM) images for all the oxides was conducted along with line spectra of planes. Results are discussed in light of correlation of these optical and mechanical parameters to their structural properties. Band gap has also been correlated to the conductivity of these oxides. Good correlation has been obtained between them.

• # Author Affiliations

1. Department of Material Science and Engineering, Holden Hall, Virginia Tech, Blacksburg, Virginia 24060, USA
2. Sri Guru Granth Sahib World University, Fategarh Sahib 140 406, India
3. School of Physics and Materials Science, Thapar University, Patiala 147 004, India

• # Bulletin of Materials Science

Current Issue
Volume 42 | Issue 6
December 2019

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019