Humidity sensing effect in Bi25FeO39 sillenite-like compound

Author(s)

Ramirez, F. E. N. ; Espinosa, E. E. ; Pedroza, Luana S. ; Souza, J. A.

• Document type: Journal article
• Source: Journal of Materials Science; v. 51, n. 24, p. 10982-10989, DEC 2016.
• Web of Science Citations: 1

Abstract

We have synthesized and characterized structural, morphological, and transport properties of three members of bismuth ferrite family. We have observed a colossal changing in the electrical resistivity of Bi25FeO39 due to humidity adsorption/desorption on the surface of the sample. We suggest that this promising humidity sensing behavior effect is enhanced by the presence of a framework structure that contains electrically polarized Bi3+ cations along with short-range ordered oxygen-vacancies. As a consequence, Bi25FeO39 compound is a real candidate for humidity sensing properties. (AU)

• FAPESP's process: 16/09769-3 - Synthesis and Physical Properties Characterization of microtubes
• Grantee: José Antonio Souza
• Support Opportunities: Regular Research Grants
• FAPESP's process: 10/18364-0 - Physical properties and critical phenomena in strong correlated systems.
• Grantee: Fabian Enrique Nima Ramirez
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/16172-5 - Synthesis and characterization of physical properties of nanosized materials
• Grantee: José Antonio Souza
• Support Opportunities: Regular Research Grants