ISSN:
1432-0630
Keywords:
66.30.−h
;
68.20.+t
;
68.48.+f
;
74.70.Rv
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The interactions between YBa2Cu3O7−δ superconducting films and ZrO2 substrates with different crystal orientations were investigated. Our results show that the crystal orientation of the substrate influences the orientations of the YBa2Cu3O7−δ crystals, whose c-axis have preferential orientations parallel to the surface of 〈100〉 ZrO2 substrates. The copper segregation in Y-Ba-Cu-O/〈ZrO2〉 films results from substrate reactions. Y, Ba, and Cu atoms diffusing into substrates were detected by AES and RBS techniques. A thin silver film evaporated on ZrO2 substrate as a buffer layer effectively slows down or eliminates the substrate interactions. The strong preferential c-axis orientation perpendicular to the substrate surface has been observed in the YBa2Cu3O7−δ /Ag/〈ZrO2〉 samples.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00619398
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