Electrochemical room temperature reduction and reoxydation of thin films and pellets of YBa2Cu3O7−x
✍ Scribed by Yosef Scolnik; Michael Rappaport; Nir Hass; Uri Dai; David Cahen
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 111 KB
- Volume
- 209
- Category
- Article
- ISSN
- 0921-4534
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Thin films of YBazCuaO+x are deposited on MgO substrates via dc magnetron sputter technic. The thicknesses varry between 1Onm and 500nm. The films are patterned by dry etching method. Narrow stripes with widths down to 1 urn are obtained without serious degradation, e.g. Tc,ocf > 85K and Tc < 1.6K.
Imaging of local electrical inhomogeneities in YBa2Cu307\_ x thin films and grain-boundary junctions was demonstrated at room temperature. The spatial distributions of the voltage response of the samples to the focused laser beam were measured with and without bias current through the samples. High-