Thin film composites in the BiFeO3–Bi4Ti3O12 system obtained by an aqueous solution-gel deposition methodology

Boletín de la Sociedad Española de Cerámica y Vidrio

Teresa Jardiel¹  Mara S. Bernardo¹  Carlos Gumiel²  Marco Peiteado²  An Hardy³  Marlies K. Van Bael³  Thomas Vranken³ 

[1] Instituto de Cerámica y Vidrio (CSIC), Madrid, Spain;POEMMA-CEMDATIC ETSI Telecomunicación (UPM), Madrid, Spain;UHasselt, Institute for Materials Research (IMO-IMOMEC), Inorganic and Physical Chemistry, Agoralaan, 3590 Diepenbeek, Belgium;

关键词: Multiferroics;    BiFeO3;    Thin films;    Chemical solution deposition;    Sol–gel spin coating;   

DOI  :  10.1016/j.bsecv.2017.09.001

来源: DOAJ

【 摘 要 】

Thin film multiferroic composites, with a high quantity of interfaces between the different materials, represent a more feasible alternative to single phase systems in which the multifunctional response is usually hampered due to intrinsic physical constraints. Nowadays some of these composites can be produced by applying deposition techniques such as PLD, CVD, MBE or the like, which allow a high degree of crystallographic control. However, despite their effectiveness, all these techniques also involve a high consumption of energy in terms of temperature and/or vacuum. Within this frame, the present contribution proposes a sustainable chemical solution deposition process to prepare thin films of the multiferroic BiFeO3–Bi4Ti3O12 composite system. More specifically an aqueous solution-gel plus spin-coating methodology is employed which also avoids the organic solvents typically used in a conventional sol–gel method, so further keeping an eye on the environmentally friendly conditions. Attempts are conducted that demonstrate how by systematically controlling the processing parameters it is possible to obtain thin film composites with a promising 3-3 type connectivity at temperatures as low as 600 °C.

【 授权许可】

Unknown