FABRICATION AND STRUCTURAL-ANALYSIS OF YBCO/PBCO SUPERLATTICES
SCIE
- Title
- FABRICATION AND STRUCTURAL-ANALYSIS OF YBCO/PBCO SUPERLATTICES
- Authors
- KIM, GH; SHIN, HJ; LEE, HJ
- Date Issued
- 1995-02
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- We have fabricated various YBCO/PBCO superlattices and investigated the microstructure by X-ray diffraction and transmission electron micrography. The superlattices were grown in situ on SrTiO3 substrates by pulsed-laser deposition. The X-ray diffraction spectra showed the formation of a high-quality superlattice structure with the c-axis normal to the substrates. In the spectra, the satellite peaks between the main peaks indicated the growth of well-defined interfaces between the YBCO and PBCO layers, which was also supported by cross-sectional transmission electron micrography. The Laue oscillations observed in the X-ray spectra confirmed that the surfaces of the superlattice films were highly uniform. The superlattice composed of two-unit-cell-thick YBCO layers showed superconductivity with a relatively broad transition width, although the normal state revealed semiconducting characteristics.
- Keywords
- YBA2CU3O7/PRBA2CU3O7 SUPERLATTICES; YBA2CU3O7-DELTA; LAYERS; TRANSITION; FILMS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21838
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 28, no. 1, page. 65 - 69, 1995-02
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