TY  - JOUR
AU  - Szot, K.
AU  - Hoffmann, S.
AU  - Speier, W.
AU  - Breuer, U.
AU  - Siegert, M.
AU  - Waser, R.
TI  - Segregation phenomena in thin films of BaTio3
JO  - Integrated ferroelectrics
VL  - 33
SN  - 1058-4587
CY  - London [u.a.]
PB  - Taylor & Francis
M1  - PreJuSER-29426
SP  - 303 -310
PY  - 2001
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000167524500032
DO  - DOI:10.1080/10584580108222312
UR  - https://juser.fz-juelich.de/record/29426
ER  -