镍基带的自发氧化是基于镍基带上制备涂层超导体所面临的一个重要问题。在镍基带上预先制备一层织构的NiO薄膜是解决该问题的一个简单而有效的方法。研究了空气中NiO薄膜的表面氧化外延生长特性,发现高温短时有利于制备高织构度、高平整度和高致密度的NiO薄膜。在优化的温度和时间条件下,制备了高品质的NiO薄膜,并在NiO上利用化学溶液沉积法制备了SmBiO3外延缓冲层,为进一步超导层的制备提供了可能的实用条件。
A randomly oriented NiO growth is an important problem for the preparation of superconducting coated conductor.A simple and valid method is to prepare textured NiO film on the bare nickel tape.In this paper,NiO film was prepared in air by the surface oxidation epitaxial method.High temperature and short time are in favor of the growth of smooth and densification NiO film.We obtained the smooth and densification NiO film at optimal temperature and for optimal time.The buffer layer of SmBiO3 was fabricated on the NiO film.This provides a potential value of the substrate for preparing superconducting layer.