Epitaxial Growth of Bi2Sr2-xLaxCu1O6+δ Thin Films by In-Situ dc Magnetron Sputtering
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Abstract
Bi2Sr2-xLaxCu1O6+δ (La-2201) thin films were successfully prepared on (100) SrTiO3 and (100) LaAIO3 substrates by in-situ dc-magnetron sputtering process. A series compensated 2201 targets of La3+ substitution contents for Sr2+ were studied for growing 2201 phase thin films. The superconducting zero resistance temperature Tc,0 reached 19K. X-ray diffraction analyses showed that films oriented with c-axis perpendicular to the substrate surface and their lattice parameters are around 2.43-2.46nm. Ф-scan and rocking curve show a good epitaxial growth and crystallisation of the films.
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