TY  - JOUR
AU  - Ohly, C.
AU  - Hoffmann-Eifert, S.
AU  - Szot, K.
AU  - Waser, R.
TI  - Defects in alkaline earth titanate thin films - the conduction behavior of doped BST
JO  - Integrated ferroelectrics
VL  - 38
SN  - 1058-4587
CY  - London [u.a.]
PB  - Taylor & Francis
M1  - PreJuSER-25929
SP  - 229 - 237
PY  - 2001
N1  - Record converted from VDB: 12.11.2012
AB  - The conduction behavior of doped BST thin films was determined in dependence of temperature (T) and the ambient oxygen partial pressure (pO(2)) by a special 4-point measurement technique. The studies covered lanthanum as donor and-manganese as acceptor type doping in various concentrations as well as selected compositions of the solid solution series (Ba1-xSrx)TiO3. The external parameters were controlled by use of a YSZ solid state oxygen pump in the temperature range from 700degreesC to 1000degreesC and oxygen atmospheres between 10(-20) and 1 bar. In contrast to the features of bulk materials, our investigations on thin films showed with a sharp drop and a plateau region a quite unusual conduction behavior. Because the classical defect chemical explanation fails, different approaches, which take a more complex defect structure and the dimensions into account, are proposed.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000173066600026
UR  - https://juser.fz-juelich.de/record/25929
ER  -