J. Phys. IV France 08 (1998) Pr9-273-Pr9-276
Granularity effects on the magnetic and electrical properties of La(Ca,Sr)MnO3 thin filmsC. Mitze1, U. Hasenkox1, R.R. Arons2 and R. Waser1, 2
1 Institut für Werksfoffe der Elektrotechnik (IWE), RWTH Aachen University of Technology, 52056 Aachen, Germany
2 Institut für Festkörperforschung, Research Center Jülich, 52425 Jülich, Germany
The influence of the grains and the grain boundaries on the resistivity in polycrystalline La0,7(Sr,Ca)0,3MnO3 has been investigated by impedance spectroscopy measurements of thin films, that are prepared by a chemical solution deposition. The results reveal grain boundary regions with a high resistivity, in contrast to the low resistivity behaviour of the bulk, equal to that of epitaxial thin films.
© EDP Sciences 1998