%A"Konczykowski, M [CEA-Ecole Polytechnique, 91 - Palaiseau (FR). Lab. d`Etudes des Solides Irradies]" %A"Chikumoto, N [Tokyo Univ. (JP). Dept. of Chemistry]" %A"Motohira, N" %A"Kishio, K" %A"Kitazawa, K [Tokyo Univ. (JP). Dept. of Chemistry]" %D1991 %I; CEA-Ecole Polytechnique, 91 - Palaiseau (France). Lab. d`Etudes des Solides Irradies %2 %J[] %K36 MATERIALS SCIENCE, 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY, HIGH-TC SUPERCONDUCTORS, MAGNETIZATION, PHYSICAL RADIATION EFFECTS, CRITICAL FIELD, PENETRATION DEPTH, TEMPERATURE DEPENDENCE, RADIATION DOSES, MONOCRYSTALS, BISMUTH OXIDES, STRONTIUM OXIDES, CALCIUM OXIDES, COPPER OXIDES, VERY LOW TEMPERATURE, 360207, 360206, 665411 %PMedium: X; Size: 2 p. %TThe first magnetic penetration field in Bscco single crystals temperature dependence and electron irradiation effect %XWe report measurements of the first magnetic penetration field, H{sub p}, of Bi{sub 2.2}Sr{sub 1.8}Ca Cu{sub 2}O{sub 8+{delta}} crystals by a novel local Hall probe technique. We demonstrate that H{sub p} is slightly enhanced above the thermodynamic lower critical field, H{sub c1}, by the Bean-Livingston surface barrier, and that irreversible magnetization at temperatures between 50K and T{sub c} (87.8K) arises mainly from the presence of this barrier. We argue that the non-linear temperature variation of H{sub p} observed, results from a temperature-dependent efficiency of the Bean-Livingston barrier. %0Conference %NCEA-CONF-10574; CONF-910736-;Other: ON: DE92743545; TRN: FR9103694 %1 %CFrance %Rhttps://doi.org/ Other: ON: DE92743545; TRN: FR9103694 FRN %GEnglish