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YBCO系超导块材平均粒径对双孔RF-SQUID噪声影响
THE INFLUENCES TO TWO HOLES RF-SQUID NOISE LEVEL FOR YBCO SUPERCONDUCTOR BULK’S AVERAGE DIAMETER
【摘要】 对不同粒径超导块材的双孔RF-SQUID的噪声水平研究表明,YBCO超导块材的晶粒粒径与双孔RF-SQUID的噪声大小呈U形关系.在15~25μm时,噪声水平很低,小于2.0×10-3φ0/Hz;反之,噪声水平偏高.
【Abstract】 This paper deals with the connection between the two holes RF-SQUID’s noise level and the YBCO superconductor bulk’s average diamter. The result is characterized by the U curve. The noise level is less than 2. 0 X 10-3t’Φ0/Hz when the average diameter of the bulk is 15~25 μm, otherwise it creases.
【关键词】 超导材料;
晶粒尺寸;
噪声级;
超导量子干涉器;
块材;
【Key words】 superconducting materials; grain size; noise level; superconducting quantum interference devices; bulk;
【Key words】 superconducting materials; grain size; noise level; superconducting quantum interference devices; bulk;
- 【文献出处】 北京航空航天大学学报 ,JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS , 编辑部邮箱 ,1995年02期
- 【分类号】V25
- 【下载频次】18