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采用直接掺入法(DMP)、粉末熔化处理法(PMP)和熔融慢冷法(MSC)3种工艺向织构化的YBa_2Cu_3O_(7-y)中引入了细小弥散的Y_2BaCuO_5(即211粒子)相,从而显著增强了YBa_2Cu_3O_(7-y)(123)材料的磁通钉轧势。用连续直流电阻法测量和2ms脉冲法测量,样品J_c值在1T、77K下,分别达到2.5×10~4A/cm~2以上(1μV/cm)和7.0×10~4A/cm~2以上(50μV/cm)。
Finely dispersed Y 2 BaCuO 5 (ie, 211 particles) was introduced into textured YBa 2 Cu 3 O 7 (7-y) by direct doping, powder melting and melt slow cooling methods. Phase, thereby significantly enhancing the flux pinning potential of YBa2Cu3O7 (7-y) (123) material. Using continuous DC resistance measurement and 2ms pulse method, the J_c values of samples reached 2.5 × 10 ~ 4A / cm ~ 2 (1μV / cm) and 7.0 × 10 ~ 4A / cm ~ 2 50 μV / cm).