Influence of neutron irradiation damage on the equilibrium properties of the polycrystalline Bi1.8Pb0.3Sr2Ca2Cu3O10 superconductor.
Influence of neutron irradiation damage on the equilibrium properties of the polycrystalline Bi1.8Pb0.3Sr2Ca2Cu3O10 superconductor.
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中子辐照损伤对多晶Bi1.8Pb0.3Sr2Ca2Cu3O10超导体平衡性能的影响。
DOI：
10.1103/physrevb.51.8551
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Chakoumakos
中科院分区：
文献类型：
--
作者：
Ossandon;Thompson;Kim;Sun;Christen;Chakoumakos
Studies of the magnetization of the polycrystalline Bi{sub 1.8}Pb{sub 0.3}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} superconductor revealed substantial changes in several properties, arising from moderate levels of damage from neutron irradiation. In addition to the expected increases in current density (as evidenced by increased magnetic hysteresis), analysis of the equilibrium magnetization revealed significant increases in several more fundamental properties, including the upper critical magnetic field {ital H}{sub {ital c}2} and the London penetration depth {lambda}{sub {ital a}{ital b}}; these increased by 30 and 15 %, respectively, following irradiation with 0.8{times}10{sup 17} n/cm{sup 2}, with still larger increases at a higher fluence. However, the most intrinsic properties, specifically the thermodynamic critical field {ital H}{sub {ital c}} and the superconductive condensation energy {ital F}{sub {ital c}}, were unchanged at the highest neutron fluence used, 2.4{times}10{sup 17} n/cm{sup 2}. We attribute the changes in fundamental properties to mean-free-path effects, via increased scattering of conduction electrons.
Studies of the magnetization of the polycrystalline Bi{sub 1.8}Pb{sub 0.3}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} superconductor revealed substantial changes in several properties, arising from moderate levels of damage from neutron irradiation. In addition to the expected increases in current density (as evidenced by increased magnetic hysteresis), analysis of the equilibrium magnetization revealed significant increases in several more fundamental properties, including the upper critical magnetic field {ital H}{sub {ital c}2} and the London penetration depth {lambda}{sub {ital a}{ital b}}; these increased by 30 and 15 %, respectively, following irradiation with 0.8{times}10{sup 17} n/cm{sup 2}, with still larger increases at a higher fluence. However, the most intrinsic properties, specifically the thermodynamic critical field {ital H}{sub {ital c}} and the superconductive condensation energy {ital F}{sub {ital c}}, were unchanged at the highest neutron fluence used, 2.4{times}10{sup 17} n/cm{sup 2}. We attribute the changes in fundamental properties to mean-free-path effects, via increased scattering of conduction electrons.