Es presenta un mètode de producció de capes primes de $ BiFeO_3 $ per síntesi en fase líquida a baixa temperatur

Balázsi, Csaba

Calderón Moreno, José María

Crespo Artiaga, Daniel

Fruth, Victor

Popa, Mónica Mihaela

Preda, Silviu

Sedlácková, Katarina

English

UPCommons. Portal del coneixement obert de la UPC

BiFeO3 films on steel substrate prepared by the polymerizedcomplex method Victor Fruth, Katarina Sedlackova, Mónica Popa*, Csaba Balazsi, Daniel Crespo,José M. Calderón-MorenoDepartment of Applied Physics, Universitat Politècnica de Catalunya, Av. Canal Olimpic s/nCastelldefels 08860 Barcelona, SpainInstitute of Physical Chemistry, Bucharest 060021, Romaniae-mail: jose.calderon@upc.edu   Web page: http://congress.cimne.upc.es/iib07   ABSTRACTWe deposited BiFeO3 films on stainless steel substrates using a simple low-temperature wet-chemical route. We used bismuth and iron nitrates as metal source and two chelating agents,citric acid and polyvinyl alcohol, in water to prepare a solution and deposited the film by dippingthe steel substrate in the viscous solution.We have investigated the structure of the BiFeO3 film on steel by HRSEM, TEM, HRTEM, EDSand EELS. The film deposited on the steel substrate has two sublayers: a very thin (about 100nm)  nanocrystalline  layer,  with  crystallite  size of  few  nms,  and a  thicker  (about  1  micron)crystalline layer.Fig. 1. SEM images of the BiFeO3 film on steel substrateFig. 2. TEM and ED images of the BiFeO3 filmREFERENCES[1] V. Fruth, M. Popa, J. M. Calderon, E. M. Anghel, D. Berger, M. Gartner, M. Anastasescu, P.Oiceanu, M. Zaharescu, “BiFeO3 films; structures and properties”, J. Eur. Ceram. Soc., inpress (2007).

BiFeO3 films on steel substrate prepared by the polymerized complex method

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BiFeO3 films on steel substrate prepared by the polymerized complex method

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