This title appears in the Scientific Report :
2014
Please use the identifier:
http://dx.doi.org/10.1002/pssr.201409221 in citations.
Fast mapping of inhomogeneities in the popular metallic perovskite Nb:SrTiO 3 by confocal Raman microscopy
Fast mapping of inhomogeneities in the popular metallic perovskite Nb:SrTiO 3 by confocal Raman microscopy
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...
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Personal Name(s): | Rodenbücher, Christian (Corresponding Author) |
---|---|
Jauß, Andrea / Havel, Viktor / Waser, Rainer / Szot, Kristof | |
Contributing Institute: |
Elektronische Materialien; PGI-7 |
Published in: | Physica status solidi / Rapid research letters, 08 (2014) 09, S. 781 - 784 |
Imprint: |
Weinheim
Wiley-VCH
2014
|
DOI: |
10.1002/pssr.201409221 |
Document Type: |
Journal Article |
Research Program: |
Frontiers of charge based Electronics |
Publikationsportal JuSER |
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 |