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实验结果表明，较慢的熔化生长速度有利于改善 Ｙ Ｂ Ｃ Ｏ 晶体的形貌并提高其磁悬浮性能。但无论怎样改善工艺都很难得到单畴的 Ｙ Ｂ Ｃ Ｏ 大块超导材料。为此引进了 Ｓｍ ２ Ｏ３ 作籽晶， Ｓｍ ２ Ｏ３ 粉末可以用来当作 Ｙ Ｂ Ｃ Ｏ 大块材料熔化生长过程中的成核中心，能够使 Ｙ Ｂ Ｃ Ｏ 晶体在样品中心成核长大到整个样品，形成具有扇形形貌的样品，其磁悬浮力比没有用籽晶的样品高很多，但仍不很理想。用 Ｎｄ Ｂ Ｃ Ｏ 单晶做籽晶，制备出的准单畴的 Ｙ Ｂ Ｃ Ｏ 大块超导材料，其磁悬浮力达到５３ Ｎ。所以，采用较慢的熔化慢冷生长速度和良好的单晶作籽晶，是制备准单畴 Ｙ Ｂ Ｃ Ｏ 大块超导材料和提高其性能的关键。
The experimental results show that the slow melting growth rate is beneficial to improve the morphology of YB C O crystal and improve its magnetic levitation performance. However, it is difficult to obtain single domain YB C O bulk superconducting materials no matter how the process is improved. For this purpose, Sm 2 O 3 was introduced as a seed. Sm 2 O 3 powder could be used as a nucleation center during the melt growth of YBCO bulk material. The YBCO crystal could nucleate and grow in the sample center To the entire sample, the formation of a fan-shaped sample, the magnetic levitation than the sample without seed is much higher, but still not very satisfactory. The monoclinic YB C O bulk superconducting material prepared by using Nd B C O single crystal as seed has a magnetic levitation force of 53 N. Therefore, the slow melting slow growth rate and the good single-crystal seed are the key to preparing quasi monodomain Y B C O bulk superconducting materials and improving their properties.