As a promising material, in the field of superconducting radio frequency (SRF), Nb₃Sn could be prepared via bronze route, which is fairly mature for preparing the superconducting cable. This paper studies how different annealing temperature and time affect the superconducting properties of Nb₃Sn films made by bronze route. Niobium films with μm thickness were deposited on bronze substrates by magnetron sputtering. The prepared samples were annealed at 700 °C and 750 °C for several hours to allow the diffusion of Sn from the bronze substrate to the niobium layer and the formation of the Nb₃Sn phase. The obtained films have been characterized via X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy analysis (EDS), and magnetic property measurement system (MPMS). The peaks of the Nb₃Sn phase were found by XRD and the EDS result showed the Sn% of the cross-section fluctuates around 23at.%. The average crystallite size is estimated to be about 82 nm. The highest critical temperature of Nb₃Sn films prepared by this method is up to 17.6 K.

作为一种很有前途的材料，在超导射频（SRF）领域，Nb ₃ Sn 可以通过青铜路线制备，在制备超导电缆方面已经相当成熟。本文研究了不同退火温度和时间对青铜路线制备的Nb _{3 Sn薄膜超导性能的影响。}通过磁控溅射将厚度为 μm 的铌薄膜沉积在青铜基板上。制备的样品在 700°C 和 750°C 下退火几个小时，以使 Sn 从青铜基底扩散到铌层并形成 Nb ₃锡相。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、能量色散X射线光谱分析(EDS)和磁性能测量系统(MPMS)对所得薄膜进行了表征。_{XRD发现Nb 3} Sn相的峰，EDS结果显示横截面的Sn%在23at.%左右波动。平均微晶尺寸估计为约 82 nm。_{该方法制备的Nb 3} Sn薄膜的最高临界温度可达17.6 K。