Bi-2223/Bi-2234 superlattice -- Its structural analysis and superconducting transition temperature
Book
·
OSTI ID:82841
- National Research Inst. for Metals, Tsukuba, Ibaraki (Japan)
(2223){sub 2}/(2234){sub 2} superlattices have been synthesized by three target sequential sputter deposition of BiO, SrCu{sub 0.5}O{sub 1.5} and CaCuO{sub 2} layers. The superstructure formed was analyzed in atomic layer scale by using some X-ray diffraction technique, such as interference of x-ray specular reflection, observation of the Laue`s function pattern and a quantitative analysis of intergrowth. The superlattice, thus confirmed in the atomic layer scale, has a superconducting transition temperature ({Tc}) as high as the average of monophasic 223 and 2234 films. The resistivity showed a similar angular dependence on the magnetic field orientation even at the temperature higher than the {Tc} of 2234. These results will be discussed by the hole diffusion and/or the proximity effect between the 2223 and 2234 layers.
- OSTI ID:
- 82841
- Report Number(s):
- CONF-940142--; ISBN 0-8194-1452-2
- Country of Publication:
- United States
- Language:
- English
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