Process optimization and characterization of thin films of SrFeO3-x by the pechini method

Abstract

/npsi/ctrl?action=rtdoc&an=9077022&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=9077022&lang=frAccess and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1007/s10971-006-6784-5Journal of Sol-Gel Science and Technology, 38, 3, pp. 271-275, 2006 Process optimization and characterization of thin films of SrFeO3-x by the pechini method Majid, Abdul; Tunney, Jim; Post, Michael; Margeson, James Highly sophisticated surface related properties, such as optical, magnetic, electronic, catalytic, mechanical, chemical and tribological properties can be obtained by advanced nanostructured coatings, making them attractive for various industrial applications. In this report we describe our efforts at developing methodology for the fabrication of SrFeO 3−x based thin films using a modified Pechini method. Thin films of SrFeO 3−x were fabricated using spin coating and a drop coating method developed in-house on Al 2 O 3 and Si-substrates. The films annealed at 600• C for one hour show a perovskite phase. The grain size increases with increase in annealing temperature. The influence of various variables such as metal to chelant ratio, drying control reagents, calcination conditions, substrate type and mode of film formation were studied using XRD, optical microscopy, SEM and AFM.

Characterization of CuO phase in SnO2–CuO prepared by the modified Pechini method

“…In some tests citric acid was added and dissolved by stirring so that an optimum molar ratio of citric acid (CA) to total metal ion (Sn ? Cu) as determined previously [20]( * 4:1) was achieved. This ratio (Ra) is defined as Ra = CA/(Sn or Sn ?…”

“…For solutions in ethylene glycol, the heating was carried out at 150°C. For aqueous solutions, ethylene glycol was added in a molar ratio of ethylene glycol (EG) to citric acid of EG/CA = 1.2 [20]. In some cases, cetyltrimethylammonium bromide (CTMAB), a surfactant was added (*2 w/w% of Sn salt) just before the addition of EG in order to determine the influence of a structure directing agent [21][22][23].…”

Preparation of SrFeO3-X Thin Films by the Spin-Coating Method and its Gas Sensing Properties

“…The details regarding the fabrication and characterization of the thin films of SrFeO 3-x by spin coating and a drop coating method were reported recently [23][24].…”

Molten salt synthesis of SrFeO3 nanocrystals

“…These oxides have been used as functional material in many fields due to its special properties, including catalysts for direct methanol fuel cell, 1) gas sensing devices, 2)6) magnetic materials, 7), 8) photocatalysts, 9) and redox materials for application in a membrane reactor. 10) The synthesis of SrFeO 3 and related compounds has been achieved by many methods including mechanochemical solid reaction, 11) hydrothermal synthesis, 12) combustion synthesis, 13) co-precipitation method, 14) solgel method 15), 16) and spray pyrolysis method. 17) Traditionally, strontium oxoferrates have been prepared by solid state reaction between SrCO 3 and Fe 2 O 3 at a high calcination temperature (µ1300°C and above), 18) which is associated with drawbacks such as diffusional constrain and high temperatures resulting in uncontrolled particle size.…”