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Title: | Aqueous chemical solution deposition of ferroelectric thin films | Authors: | VAN BAEL, Marlies NELIS, Daniel HARDY, An MONDELAERS, Dirk VAN WERDE, Kristof D'HAEN, Jan VANHOYLAND, Geert VAN DEN RUL, Heidi MULLENS, Jules VAN POUCKE, Lucien FREDERIX, Filip Wouters, DJ |
Issue Date: | 2002 | Publisher: | TAYLOR & FRANCIS LTD | Source: | INTEGRATED FERROELECTRICS, 45. p. 113-122 | Abstract: | Thin films of various ferroelectric multimetal oxides such as (Bi1-xLax)(4)Ti3O12(BLT), SrBi2Ta2O9 (SBT) and PbZr1-xTixO3 (PZT) have been prepared by an entirely aqueous chemical solution deposition (CSD) route. Two critical issues related with aqueous CSD have hereby been worked out: in spite of the high degree of hydrolysis of tetra- and pentavalent metal ions (Ti4+ , Zr4+ , Ta5+, ...) we managed to prepare stable aqueous precursor solutions by chemical modification of these individual metals, avoiding phase segregation. Another problem related with aqueous CSD is the wetting of the substrate (both metallic and metal oxide) by the aqueous solution. The hydrophilicity of the substrates is optimized by a chemical treatment of the substrate surface. In this manner, the addition of wetting agents, hence possibly disturbing the gelation reactions, is avoided. In order to study the gelation, decomposition, crystalization and the morphology of the thin films, various characterization techniques ((cryo-)TEM, SEM, EDX, TGA-MS/FTIR, HT-DRIFT, HT-XRD, ...) are used. | Notes: | Limburgs Univ Ctr, Lab Inorgan & Phys Chem, IMO, B-3590 Diepenbeek, Belgium. Limburgs Univ Ctr, IMOMEC, IMO, B-3590 Diepenbeek, Belgium. Limburgs Univ Ctr, Phys Anal Grp, IMO, B-3590 Diepenbeek, Belgium. IMEC, B-3001 Heverlee, Belgium.Van Bael, MK, Limburgs Univ Ctr, Lab Inorgan & Phys Chem, IMO, B-3590 Diepenbeek, Belgium. | Document URI: | http://hdl.handle.net/1942/2505 | ISSN: | 1058-4587 | e-ISSN: | 1607-8489 | ISI #: | 000179828300015 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2004 |
Appears in Collections: | Research publications |
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