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研究Ｎｄ替代Ｙ后对ＹＢａ２Ｃｕ３Ｏ７－δ（Ｙ１２３）超导织构体的临界电流密度及微结构的影响，采用溶胶－凝胶工艺制备名义组份为Ｙ１－ｘＮｄｘＢａ２Ｃｕ３Ｏ７－δ的先驱物，用熔融织构生长（ＭＴＧ）工艺生长织构样品．结果表明，组份的熔点［θｍ（ｘ）］随着ｘ的增加而提高，并随着Δθ＝θｍａｘ－θｍ（ｘ）（θｍａｘ是ＭＴＧ工艺过程的最高保持温度）的提高，织构体中ＣｕＯ的含量增加，晶界之间及织构畴之间的弱连接的性质更加明显．由于晶粒内部及织构畴的磁通钉扎力得到一定程度的提高，临界电流密度ＪＣ随ｘ的变化有１个最大值．
The effect of Nd substitution on the critical current density and microstructures of YBa2Cu3O7-δ (Y123) superconducting composites was studied. The precursors of nominal composition Y1-xNdxBa2Cu3O7-δ were prepared by sol-gel process. Textured growth (MTG) process grows textured samples. The results show that the melting point [θm (x)] of the composition increases with increasing x, and as Δθ = θmax-θm (x) (θmax is the maximum holding temperature of the MTG process) The content of CuO increases, the properties of the weak link between the grain boundaries and between the textured domains become more pronounced. As the flux pinning force inside and outside the grains increases to a certain degree, the critical current density JC has a maximum with the change of x.