Nanostructured barium titanate ceramics
2004 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 148, no 1, 24-27 p.Article in journal (Refereed) Published
Dense nanocrystalline ceramics can be obtained starting from non-agglomerated nanopowders and using low-temperature sintering processes. The preparation and the properties of Barium Titanate (BaTiO3) ceramics and thick films are reported: ceramics were prepared by Spark Plasma Sintering (SPS) at 800 degreesC of nanopowders produced by a wet chemical process, while films were fabricated by airflow deposition (AD) of mixed fine and coarse powders at room temperature followed by isothermal firing. Ferroelectric ordering was found in both the ceramics and the sintered films by a.c. impedance. The transition from ferroelectric to paraelectric state was broadened over a wide temperature range with Curie-Weiss parameters strongly depressed in comparison to coarse-grained ceramics.
Place, publisher, year, edition, pages
2004. Vol. 148, no 1, 24-27 p.
nanoparticles, nanocrystalline materials, barium titanate, airflow deposition, spark plasma sintering
IdentifiersURN: urn:nbn:se:kth:diva-89032DOI: 10.1016/j.powtec.2004.09.016ISI: 000225907400007OAI: oai:DiVA.org:kth-89032DiVA: diva2:502651
QC 201203072012-02-142012-02-142012-03-07Bibliographically approved