Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8163871 | Physica C: Superconductivity and its Applications | 2018 | 11 Pages |
Abstract
The MOCVD process was adopted to grow the REBa2Cu3O7-δ ((REBCO), REâ¯=â¯rare earth elements) films on the LaMnO3 (LMO) templates. Meanwhile, the LMO-template tapes are heated by the joule effect after applying a heating current through the Hastelloy metal substrates. The surface of GdYBCO films prepared by MOCVD method is prone to form outgrowths. So the surface morphology of GdYBCO film is optimized by depositing the SmBCO layer, which is an important process method for the preparation of high-quality multilayer REBCO films. At last, the GdYBCO/SmBCO/GdYBCO multilayer films were successfully prepared on the LMO templates based on the simple self-heating method. It is demonstrated that the GdYBCO surface was well improved by the characterization analysis of scanning electron microscope. And the ÎÏ of REBCO (005) and ÎÏ of REBCO (103), which were performed by an X-ray diffraction system, are respectively 1.3° and 3.3° What's more, the critical current density (Jc) has been more than 3 MA/cm2 (77â¯K, 0 T) and the critical current (Ic) basically shows a trend of good linear increase with the increase of the number of REBCO layers.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Zhao Ruipeng, Zhang Fei, Liu Qing, Xia Yudong, Lu Yuming, Cai Chuanbing, Tao Bowan, Li Yanrong,