Optical, mechanical and TEM assessment of titania-doped Bi2V1-xTixO5·5-δ bismuth vanadate oxides

Gurbinder Kaur; Gary Pickrell; Vishal Kumar; Om Prakash Pandey; Kulvir Singh; Daniel Homa

doi:10.1007/s12034-014-0725-7

Optical, mechanical and TEM assessment of titania-doped Bi₂V_1-xTi_xO_5·5-δ bismuth vanadate oxides

Gurbinder Kaur
, Gary Pickrell
, Vishal Kumar
, Om Prakash Pandey
, Kulvir Singh
, Daniel Homa

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Optical, mechanical and structural behaviors have been studied for titania-doped Bi₂V_1-xTi_xO_5·5-δ 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.

Original language	English
Pages (from-to)	1647-1656
Number of pages	10
Journal	Bulletin of Materials Science
Volume	37
Issue number	7
DOIs	https://doi.org/10.1007/s12034-014-0725-7
State	Published - 1 Dec 2014
Externally published	Yes

Keywords

Ceramics
Mechanical properties
Optical properties
Transmission electron microscopy

Access to Document

10.1007/s12034-014-0725-7

Cite this

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title = "Optical, mechanical and TEM assessment of titania-doped Bi2V1-xTixO5·5-δ bismuth vanadate oxides",

abstract = "Optical, mechanical and structural behaviors have been studied for titania-doped Bi2V1-xTixO5·5-δ which are used as electrolytes for intermediate temperature fuel cells. Parameters like band gap (Eg), Urbach energy (Eu), 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.",

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T1 - Optical, mechanical and TEM assessment of titania-doped Bi2V1-xTixO5·5-δ bismuth vanadate oxides

AU - Kaur, Gurbinder

AU - Pickrell, Gary

AU - Kumar, Vishal

AU - Pandey, Om Prakash

AU - Singh, Kulvir

AU - Homa, Daniel

N1 - Publisher Copyright: © Indian Academy of Sciences.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Optical, mechanical and structural behaviors have been studied for titania-doped Bi2V1-xTixO5·5-δ which are used as electrolytes for intermediate temperature fuel cells. Parameters like band gap (Eg), Urbach energy (Eu), 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.

AB - Optical, mechanical and structural behaviors have been studied for titania-doped Bi2V1-xTixO5·5-δ which are used as electrolytes for intermediate temperature fuel cells. Parameters like band gap (Eg), Urbach energy (Eu), 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.

KW - Ceramics

KW - Mechanical properties

KW - Optical properties

KW - Transmission electron microscopy

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