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通过选择助熔剂的最佳组成和改进单晶生长工艺及晶体分离方法，探索生长较大尺寸ＹＢＣＯ（１２３相）单晶及从助熔剂残余凝固体中无机械损伤地分离出长成晶体的途径．该文采用对扣双坩埚、高温翻转工艺等技术，获得了供超导基础研究用的３×５×０．８ｍｍ３高质量ＹＢＣＯ（１２相）单晶样品．测得其超导转变温度Ｔｃ在退火前为８４Ｋ，在５００℃氧气氛中遇火后达到９１Ｋ．
By selecting the best composition of flux and improving the single crystal growth process and crystal separation method, the growth of larger size YBCO (123 phase) single crystal is explored and the crystal growth pathways are separated without mechanical damage from the flux residual solidification body . In this paper, a 3 × 5 × 0.8mm3 high quality YBCO (12-phase) single crystal sample for basic research of superconductivity was obtained by using the technology of buckle double crucible and high temperature overturning technology. The superconducting transition temperature, Tc, was measured to be 84K before annealing and 91K in an oxygen atmosphere at 500 ° C.