Physical Properties of Hgx Sb_(1-x) Ba_2Ca_2Cu_3O_(8+δ) Superconducting Compound: Effect of Fast Neutrons Irradiation

摘要

Applications of superconductor compounds were considered as modern and important topics, especially these which are exposures to one of the nuclear radiation kinds. So, we gone to investigate the influence of fast neutrons irradiation on electrical and structural characteristics of Hg_xSb_(1-x)Ba_2Ca_2Cu_3O_(8+δ) superconducting compound at (x = 0.7) in ratio. The superconducting specimens were synthesized using solid state technique. Specimens were exposure to the nuclear radiation using fast neutrons with doses (0, 9.06 x10~(10), 15.3 x 10~(10) and 18.17 x 10~(10) ) n/cm~2 respectively. Electrical and X-ray diffraction properties of superconductor specimens before and after irradiation were investigated under standard conditions. Results of X-ray diffraction show that the structure of HgxSb_(1-x) Ba_2Ca_2Cu_3O_(8+δ) has tetragonal structure according to the 1223 phase. Besides, increment of the ratio (c/a) as a result of the effect of fast neutron irradiation. The transition temperature T_(c(on)) as well as T_(c(off)) were decreased from (117 to 85) K and from (133 to 101) K, respectively.