Superconducting single-phase Sr1-xLaxCuO2 thin films with improved crystallinity grown by pulsed laser deposition

Leca, Victor and Blank, Dave H.A. and Rijnders, Guus and Bals, Sara and Tendeloo van, Gustaav (2006) Superconducting single-phase Sr1-xLaxCuO2 thin films with improved crystallinity grown by pulsed laser deposition. Applied Physics Letters, 89 (9). 092504/1- 092504/3. ISSN 0003-6951

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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.
Item Type:	Article
Copyright:	© 2006 American Institute of Physics
Faculty:	Science and Technology (TNW)
Research Group:	Inorganic Materials Science (IMS)
Link to this item:	http://purl.utwente.nl/publications/59193
Official URL:	http://dx.doi.org/10.1063/1.2339840
Publisher URL:	http://link.aip.org/link/?APPLAB/89/092504/1
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