中文摘要：

超导的量干扰设备(枪乌) 放大器广泛地为它的低输入阻抗，低噪音，和低电源消费在弱信号察觉的域里被使用。在这份报纸，有相同连接的枪乌和有不同连接的系列枪乌成功地被制作。Nb/Al-AlO _x /Nb trilayer 和输入 Nb 卷被 asputtering 设备准备。枪乌设备被劈啪作响和起飞方法准备。由 AFM， OM 和 SEM 的调查揭示了 Nb 电影和 Nb/Al-AlO _x /Nb trilayer 的形态学和粗糙。另外，有相同连接和不同连接区域的枪乌设备的当前电压的特征在 2.5 K 被测量在他 ³ 冰箱。结果证明 SQUID 调整深度显然受连接区域影响。调整深度显然随某个范围的连接区域的增加增加。有相同连接区域的系列枪乌近似有 58 的跨阻抗获得，这被发现。

英文摘要：

The superconducting quantum interference device（SQUID） amplifier is widely used in the field of weak signal detection for its low input impedance, low noise, and low power consumption. In this paper, the SQUIDs with identical junctions and the series SQUIDs with different junctions were successfully fabricated. The Nb/Al-AlOx/Nb trilayer and input Nb coils were prepared by asputtering equipment. The SQUID devices were prepared by a sputtering and the lift-off method.Investigations by AFM, OM and SEM revealed the morphology and roughness of the Nb films and Nb/Al-AlOx/Nb trilayer.In addition, the current–voltage characteristics of the SQUID devices with identical junction and different junction areas were measured at 2.5 K in the He^3 refrigerator. The results show that the SQUID modulation depth is obviously affected by the junction area. The modulation depth obviously increases with the increase of the junction area in a certain range. It is found that the series SQUID with identical junction area has a transimpedance gain of 58 Ω approximately.