Co,Zn元素对YBa 2 Cu 3 O 7-δ 的不同的掺杂效应

对单相掺杂样品YBa 2 Cu 3-x Co x O y (x=0.00,0.025,0.05,0.075,0.10,0.125,0.15,0.20,0.25,O.275,0.30,0.325,0.35,0.375,0.40)和YBa 2 Cu 3-x Zn x O y (x=O.025,0.05,0.075,0.10,0.15,0.20,0.30)作了室温下的