轴向温度梯度对熔融法YBCO液相损失的影响  

Effect of Axial Temperature Gradient on the Egression of Liquid Phases in Melting Growth Process of Bulk YBCO

作　　者：杨万民[1] 汪京荣[1] 张翠萍[1] 李建平[1] 王天成[1] 吴晓祖[1] 周廉[1] 

机构地区：[1]西北有色金属研究院

出　　处：《稀有金属材料与工程》1995年第4期37-40,共4页Rare Metal Materials and Engineering

摘　　要：从理论上分析了ＹＢＣＯ晶体生长过程中造成成份偏析的一个主要因素即液相流失的成因及控制方法，并从实验上证明：合理地利用温度梯度能够有效地控制ＹＢＣＯ晶体生长过程中液相的流失及Ｙ原子的定向扩散。Abstract: The deviation of chemical composition, caused by the egression of the liquid phases in the melting growth process, is a major problem for the well growth of YBCO superconductor. In order to provent the effluence of the liquid phases, a paper is proposed here to analyse the reason theoretically and to provide a way to solve the problem. It is testified by experiments that a proper temperature gradient is effective to control the effluence of the liquid phases and the diffusion of Y atom in the melt-growth process.

关 键 词：YBCO超导体 熔融生长 温度梯度 液相 控制 

分 类 号：O781[理学—晶体学] O511.1