Regensburg 2007 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 15: Poster Session
DS 15.27: Poster
Dienstag, 27. März 2007, 15:00–17:00, Poster B
Comparative study of PLD and sputtered Pr0,68Ca0,32MnO3 films: Resistance switching effect at room temperature — •Julia Fladerer, Peter Moschkau, Sebastian Schramm, Christian Jooss, and Jörg Hoffmann — Institut für Materialphysik, Universität Göttingen
PCMO thin films were grown on SrTiO3 substrates with an average thickness of 330 nm via ion-beam sputtering and pulsed laser deposition (PLD). A temperature series was carried out to be able to control polycrystalline and epitaxial growth. It was found, that initial resistivity and film strain could also be controlled this way. Both types of films were analysed in via SEM, AFM and x-ray and a systematic comparison of the lattice parameters, twinning and resistivity was performed. The remanent resistance change after applying positive and negative voltage pulses was analyzed at room temperature. In order to study the impact of different preparation techniques on the colossal electro- and magnetoresistance, temperature dependent resistance measurements at different current and magnetic fields are presented for selected samples.