Abstract
YBa 2Cu 3O 7- x (YBCO) superconducting film was fabricated on {001} LaAlO 3 (LAO) substrate by pulse laser deposition (PLD), and its microstructure was examined by high resolution X-ray diffraction technology (HRXRD), such as pole figure, rocking curve, reciprocal space mapping. The results show that the YBCO crystalline alignment is almost {001} YBCO//{001} LAO, 〈100〉 YBCO//〈100〉 LAO besides 2% {001} YBCO//{001} LAO, 〈110〉 YBCO//〈100〉 LAO. The out-plane alignment of YBCO is some spreading (the breadth is 0.75°). There are 90°±0.65°〈110〉 twin domains in the film, which is caused by the high local stress and stress difference between 〈100〉 and 〈010〉 during the tetragonal to orthorhombic phase transition.
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More From: Transactions of Nonferrous Metals Society of China
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