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．
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.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1995年第2期1-4,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
超导材料
晶粒尺寸
噪声级
超导体
superconducting materials
grain size
noise level
superconducting quantum interference devices
bulk
