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Author Ossandon, J. G. ♦ Thompson, J. R. ♦ Kim, Y. C. ♦ Sun, Y. R. ♦ Christen, D. K. ♦ Chakoumakos, B. C.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ HIGH-TC SUPERCONDUCTORS ♦ RADIATION EFFECTS ♦ COPPER OXIDES ♦ CALCIUM OXIDES ♦ STRONTIUM OXIDES ♦ LEAD OXIDES ♦ BISMUTH OXIDES ♦ POLYCRYSTALS ♦ MAGNETIZATION ♦ NEUTRON BEAMS ♦ CURRENT DENSITY ♦ CRITICAL FIELD ♦ PENETRATION DEPTH
Abstract 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.
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1995-04-01
Publisher Department Oak Ridge National Laboratory
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 51
Issue Number 13
Organization Oak Ridge National Laboratory


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