论文部分内容阅读
用ＰＭＰ生长方法制备ＹＢａ２Ｃｕ３Ｏ７大尺寸块材，通过调整成分和工艺，制备出直径３．５ｃｍ，厚０．９ｃｍ的圆片，利用表磁约０．３Ｔ的ＮｄＦｅＢ永磁体，能将１．３ｋｇ重的物体悬浮起１ｍｍ左右的高度。ＸＲＤ和ＳＥＭ观察表明，弥散的Ｙ２ＢａＣｕＯ５细小颗粒以及添加适量的银，对磁悬浮性能的提高有着重要作用。
YBa2Cu3O7 large size block was prepared by PMP growth method. By adjusting the composition and process, a disk with a diameter of 3.5cm and a thickness of 0.9cm was prepared. Using a NdFeB permanent magnet with a gauge of about 0.3T, The object is suspended about 1mm high. XRD and SEM observations show that the diffused Y2BaCuO5 fine particles and the addition of proper amount of silver play an important role in improving the magnetic levitation performance.