TY  - JOUR
AU  - Rodenbücher, Christian
AU  - Jauß, Andrea
AU  - Havel, Viktor
AU  - Waser, Rainer
AU  - Szot, Kristof
TI  - Fast mapping of inhomogeneities in the popular metallic perovskite Nb:SrTiO 3 by confocal Raman microscopy
JO  - Physica status solidi / Rapid research letters
VL  - 08
IS  - 09
SN  - 1862-6254
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2014-04957
SP  - 781 - 784
PY  - 2014
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000342692300006
DO  - DOI:10.1002/pssr.201409221
UR  - https://juser.fz-juelich.de/record/156074
ER  -