Description: Nanocomposite thin films for miniaturized multi-ayer ceramic capacitors prepared from barium titanate nanoparticle based hybrid solutions

This title appears in the Scientific Report : 2011

Nanocomposite thin films for miniaturized multi-ayer ceramic capacitors prepared from barium titanate nanoparticle based hybrid solutions

In the present work a flexible approach for the wet chemical processing of nanocomposite functional thin films is demonstrated. Barium titanate (BTO) based nanocomposite thin films for future miniaturized multi-layer ceramic capacitors are chosen as model systems to introduce the concept of "hy...

Personal Name(s):	Schneller, T.
	Halder, S. / Waser, R. / Pithan, C. / Dornseiffer, J. / Shiratori, Y. / Houben, L. / Vyshnavi, N. / Majumber, S.B.
Contributing Institute:	JARA-FIT; JARA-FIT Troposphäre; IEK-8 Elektronische Materialien; PGI-7
Published in:	Journal of materials chemistry, 21 (2011) S. 7953 - 7965
Imprint:	London ChemSoc 2011
Physical Description:	7953 - 7965
DOI:	10.1039/C1JM10607D
Document Type:	Journal Article
Research Program:	Atmosphäre und Klima Grundlagen für zukünftige Informationstechnologien
Series Title:	Journal of Materials Chemistry 21
Subject (ZB):	J
Link:	Get full text Published under German "Allianz" Licensing conditions on 2011-05-03. Available in OpenAccess from 2012-05-03
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1039/C1JM10607D in citations.
Please use the identifier: http://hdl.handle.net/2128/7299 in citations.

In the present work a flexible approach for the wet chemical processing of nanocomposite functional thin films is demonstrated. Barium titanate (BTO) based nanocomposite thin films for future miniaturized multi-layer ceramic capacitors are chosen as model systems to introduce the concept of "hybrid solutions" which consist of stabile mixtures of reverse micelle derived BTO nanoparticle dispersions and conventional molecular precursor solutions of either the same (BTO:BTO) or a specifically different material such as zirconia (BTO:ZrO2). While in the case of using BTO:BTO hybrid solutions an interesting mode of microstructure control is found, the use of BTO:ZrO2 hybrid solutions with various BTO : ZrO2 ratios leads to nanocomposite films. BTO:BTO hybrid solutions yield columnar grown films with excellent permittivities up to 1050 with a significantly reduced number of coating steps at 700 degrees C. Low values of the temperature coefficient of capacitance are realized in the BTO-ZrO2 nanocomposite thin films. The observed dielectric behavior of these films is explained based on the formation of a core-shell type microstructure on the nanoscale. A detailed high resolution transmission electron microscopy study combined with Raman spectroscopy and X-ray diffraction gives evidence for the proposed BTO-ZrO2 nanocomposite character of these thin films.