【摘要】 测量了无孪晶的LaBaCaCu₃O_y和LaBa_1.5Ca_0.5Cu₃O-y的磁临界电流J_c,其数值及随温度的变化都与YBa₂Cu₃O_y系统比较接近,而与Tl₂Ba₂ca₂Cu₃O_y明显不同。这表明孪晶并不是使这些材料的临界电流有差别的主要因素。更多还原

【Abstract】 The magnetic critical currents J, of LaBaCaCu₃O_y and LaBa_1.5Ca_0.5Cu₃O_y were measured. The variation with temperature of J_c of these compounds is similar to that of YBa₂Cu₃O_y but different from that of Tl₂ Ba₂Ca₂Cu₃O_y. These results indicate that twins do not play an important role in determining the magnetic critical current of these compounds.更多还原