%0 Journal Article
%A Rodenbücher, Christian
%A Jauß, Andrea
%A Havel, Viktor
%A Waser, Rainer
%A Szot, Kristof
%T Fast mapping of inhomogeneities in the popular metallic perovskite Nb:SrTiO 3 by confocal Raman microscopy
%J Physica status solidi / Rapid research letters
%V 08
%N 09
%@ 1862-6254
%C Weinheim
%I Wiley-VCH
%M FZJ-2014-04957
%P 781 - 784
%D 2014
%X Confocal Raman microscopy was applied in order to investigate the homogeneity of donor doping in Nb:SrTiO3 single crystals. Measurements of local Raman spectra revealed a systematic relation between the intensity of the Raman signal and the donor content of the crystals. We successfully elaborated a correspondence between the electronic structure and the intensity of the Raman lines using a crystal with macroscopic inhomogeneity as a demonstration sample. By mapping the distribution of the intensity of the Raman signal, we identified a characteristic inhomogeneous structure related to the presence of clusters with sizes of 5 µm to 20 µm, indicating inhomogeneous donor distribution caused by flaws introduced during crystal growth. Hence, we propose confocal Raman microscopy as a convenient technique for investigating the homogeneity and quality of doped perovskite surfaces, which are needed for various technological applications
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000342692300006
%R 10.1002/pssr.201409221
%U https://juser.fz-juelich.de/record/156074