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Preparation method of LAO (LaAlO3) doped composite YBCO film
The invention discloses a preparation method of a LAO (LaAlO3) doped composite YBCO film and belongs to the technical field of preparation of high-temperature superconducting materials. According to the method, organic La salt and Al salt are taken as precursor salts, a precursor solution is prepared with a chemical solution method and then applied to an LAO single crystal substrate with a spin coating method, and then a film is composited to the single crystal surface with a heating processing technology. According to the provided LAO doped composite film, the doping phase LAO can have a coherent boundary with YBCO, and the YBCO structure is not damaged while a pinning defect is introduced. An external solvent is not added, a system is simple, cost-saving, time for a sintering technology is shorter, and epitaxial growth of YBCO is not hindered while the LAO phase is formed. Je of a sample, doped with 5% of LAO, of the composite film under self-field is about 3 times of that of a pure YBCO film and is about 6 times of that of the pure YBCO film under an external field with 77 K and 1.5 T.
Preparation method of LAO (LaAlO3) doped composite YBCO film
The invention discloses a preparation method of a LAO (LaAlO3) doped composite YBCO film and belongs to the technical field of preparation of high-temperature superconducting materials. According to the method, organic La salt and Al salt are taken as precursor salts, a precursor solution is prepared with a chemical solution method and then applied to an LAO single crystal substrate with a spin coating method, and then a film is composited to the single crystal surface with a heating processing technology. According to the provided LAO doped composite film, the doping phase LAO can have a coherent boundary with YBCO, and the YBCO structure is not damaged while a pinning defect is introduced. An external solvent is not added, a system is simple, cost-saving, time for a sintering technology is shorter, and epitaxial growth of YBCO is not hindered while the LAO phase is formed. Je of a sample, doped with 5% of LAO, of the composite film under self-field is about 3 times of that of a pure YBCO film and is about 6 times of that of the pure YBCO film under an external field with 77 K and 1.5 T.
Preparation method of LAO (LaAlO3) doped composite YBCO film
SUO HONGLI (author) / XU YAN (author) / LIU MIN (author) / MA LIN (author) / YI NING (author)
2016-01-27
Patent
Electronic Resource
English
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