Abstract
Sr1-xLaxCuO2-delta (x=0.10-0.20) thin films exhibiting an oxygen-deficient 2V2ap x 2V2ap x c structure ap and c represent the cell parameters of the perovskite subcell were epitaxially grown by means of pulsed laser deposition in low-pressure oxygen ambient. (001) KTaO3 and (001) SrTiO3 single crystals were used as substrates, with BaTiO3 as buffer layer. The Sr1-xLaxCuO2-delta
films were oxidized during cooling down in order to yield the infinite-layer-type structure. By applying this method, high quality single-phase Sr1-xLaxCuO2 thin films could be obtained for 0.10<x<0.175 doping range. The films grown on BaTiO3 /KTaO3 show superconductivity for 0.15<x<0.175 with optimum doping at x=0.15, in contrast with previously reported data.
Original language | Undefined |
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Pages (from-to) | 092504- |
Number of pages | 3 |
Journal | Applied physics letters |
Volume | 89 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2006 |
Keywords
- METIS-235013
- IR-59193