An All Sol-Gel Process for the Heteroepitaxial Growth of YBa2Cu3O7-x/LaNiO3/YBa2Cu3O7-x Tri-layer

被引：2
作者：
Wu, Chuanbao [1 ]
Zhao, Gaoyang [1 ]
Fang, Po [1 ]
Wang, Shasha [1 ]
Zhang, Ye [1 ]
机构：
[1] Xian Univ Technol, Dept Mat Phys & Chem, Xian 710048, Peoples R China
来源：
COATINGS | 2017年 / 7卷 / 05期
关键词：
sol-gel; HRTEM; superconductor; heteroepitaxy; tri-layer; LANIO3; THIN-FILMS; JOSEPHSON; YBA2CU3O7-X; STABILITY; JUNCTIONS; BARRIER;
D O I：
10.3390/coatings7050062
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The preparation of a YBa2Cu3O7 (x)/LaNiO3/YBa2Cu3O7-x sandwich structured film on a LaAlO3 (100) substrate by a sol-gel method was investigated. YBa2Cu3O7-x/LaNiO3/YBa2Cu3O7-x tri-layer heterostructures with different epitaxial characteristics can be deposited by controlling the heat treatment temperature. X-ray diffraction and transmission electron microscopy results show that the bottom YBCO film grows epitaxially on the LaAlO3 substrate along the c axis, and that this epitaxial growth trend is extended to the subsequently deposited LaNiO3 film. For this reason, the LaNiO3 film also grows epitaxially along the c axis. Furthermore, this epitaxial growth trend is extended to the top YBa2Cu3O7-x film, yielding YBa2Cu3O7-x/LaNiO3/YBa2Cu3O7-x tri-layer heterostructures with epitaxial growth characteristics along the c axis, which enables both the bottom and top YBa2Cu3O7-x layers to possess superconducting abilities.
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页数：8
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