%0 Journal Article
%A Ohly, C.
%A Hoffmann-Eifert, S.
%A Szot, K.
%A Waser, R.
%T Defects in alkaline earth titanate thin films - the conduction behavior of doped BST
%J Integrated ferroelectrics
%V 38
%@ 1058-4587
%C London [u.a.]
%I Taylor & Francis
%M PreJuSER-25929
%P 229 - 237
%D 2001
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000173066600026
%U https://juser.fz-juelich.de/record/25929