Effect of high-energy heavy-ion irradiation on the critical current density of Bi-2212 single crystals
作者： T. Terai , T. Kobayashi , K. Kishio , J. Shimoyama , S. Okayasu
DOI: 10.1016/S0921-4534(97)01169-6
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摘要: Abstract Change in magnetic properties of Bi2Sr2CaCu2O8+y(Bi-2212) single crystals due to 240 MeV Au14+ ion irradiation parallel the c-axis with fluences 5×1010, 5×1011 and 1×1012 cm−2 is reported. Magnetization curves specimens before after were measured a vibrating sample magnetometer at 4.3K, 20K, 40K 60K field applied up 7.5T c-axis. The critical current density (Jc) calculated from magnetization hysteresis increased all over range temperature except 4.3K. Enhancement ratio Jc irreversibility took maximum around 5×1010 cm−2.
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