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Titel: Pitfalls in the synthesis of nanoscaled perovskite type compounds, Part I: influence of different sol-gel preparation methods and characterization of nanoscaled BaTiO3
Verfasser: Beck, H.P.
Eiser, W.
Haberkorn, R.
Sprache: Englisch
Erscheinungsjahr: 2001
Quelle: J. Eur. Ceram. Soc. 21/6 (2001), 687-693
SWD-Schlagwörter: Keramik
Bariumtitanat
Chemische Synthese
Nanostrukturiertes Material
Freie Schlagwörter: ceramics
BaTiO3
Perovskites
Powders-chemical preparation
Sol—gel processes
DDC-Sachgruppe: 540 Chemie
Dokumentart : Journalartikel
Kurzfassung: Different sol—gel routes are compared for the synthesis of nanoscaled BaTiO3 with respect to the reaction paths and the quality of the products. The various precursor systems differ largely in their behaviour during decomposition imposing quite different procedures for their thermal treatment. It is shown that the compositional homogeneity during the process of synthesis, which is the target of sol—gel methods, may well be destroyed by the formation of intermediate compounds. It will only be restored after prolonged heating at higher temperatures where the crystallite sizes will in general have left the nanoregime. Due to such pitfalls the desired properties of the products with narrow size distributions will not always be ensured when working according to such recipes and the products obtained will behave quite differently in fabrication procedures like shaping and sintering of workpieces.
Link zu diesem Datensatz: urn:nbn:de:bsz:291-scidok-4735
hdl:20.500.11880/22371
http://dx.doi.org/10.22028/D291-22315
SciDok-Publikation: 24-Aug-2005
Fakultät: Fakultät 8 - Naturwissenschaftlich-Technische Fakultät III
Fachrichtung: NT - Chemie
Fakultät / Institution:NT - Naturwissenschaftlich- Technische Fakultät

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