%0 Journal Article
%A Szot, K.
%A Hoffmann, S.
%A Speier, W.
%A Breuer, U.
%A Siegert, M.
%A Waser, R.
%T Segregation phenomena in thin films of BaTio3
%J Integrated ferroelectrics
%V 33
%@ 1058-4587
%C London [u.a.]
%I Taylor & Francis
%M PreJuSER-29426
%P 303 -310
%D 2001
%Z Record converted from VDB: 12.11.2012
%X The near-surface region in perovskite bulk crystals is known to be subject to segregation processes at elevated temperatures which can lead to the formation of non-perovskite phases. We have addressed the question whether analogue phenomena may occur in thin films, Thin films of BaTiO3 prepared by different methods (PLD, CSD) and heat-treated in the temperature range of 700 degreesC-1000 degreesC are characterised by surface analytical methods and microanalysis (AFM, SIMS, XPS). Our studies reveals dramatic changes in the surface morphology and in-depth elemental distribution suggesting a chemical restructuring comparable to the effects known for single crystalline BaTiO3. Possible driving forces for the observed segregation phenomena are discussed taking into account specific properties of the thin films.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000167524500032
%R 10.1080/10584580108222312
%U https://juser.fz-juelich.de/record/29426