Studies on the oxygen sensing characteristics of SrFe1−xTixO3-δ

Author

Prabhu, E. ; Gnanasekar, K.I. ; Jayaraman, V. ; Gnanasekaran, T.

Author_Institution

Chem. Group, Indira Gandhi Centre for Atomic Res., Kalpakkam, India

fYear

2015

fDate

7-10 March 2015

Firstpage

328

Lastpage

333

Abstract

Compositions of nominal formula, SrFe_1-xTi_xO_3-δ (x = 0 - 0.8) were prepared by solid state method and characterized by X-ray diffraction and Mossbauer spectroscopic studies. Electrical conductivities of these samples were studied at different temperatures in three different oxygen concentrations. Thin films of SrFe₀.₂Ti_0.8O_3-δ and SrFe_0.35Ti_0.65O_3-δ were deposited on polycrystalline alumina using pulsed laser deposition (PLD) technique. These films were found sensing changes in percentage levels of oxygen concentration. The optimum operating temperature of the sensor was found to be 698 K. The response and recovery times were 5 and 15 s respectively.

Keywords

Mossbauer effect; X-ray diffraction; chemical sensors; chemical variables measurement; electrical conductivity; iron compounds; oxygen; pulsed laser deposition; semiconductor growth; semiconductor materials; semiconductor thin films; strontium compounds; thin film sensors; Al₂O₃; Mossbauer spectroscopy; O₂; PLD; SrFe_1-xTi_xO_3-δ; X-ray diffraction; electrical conductivities; oxygen concentrations; oxygen sensing; polycrystalline alumina; pulsed laser deposition; recovery time; response time; solid state method; temperature 698 K; thin films; time 15 s; time 5 s; Conductivity; Iron; Resistance; Solids; Temperature measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on

Conference_Location

Pune

Type

conf

DOI

10.1109/ISPTS.2015.7220140

Filename

7220140