TY - JOUR T1 - TEM study of (2223) BSCCOsuperconducting material TT - مطالعه مواد ابررسانای نوع BSCCO(2223) با استفاده از TEM JF - ijcmir JO - ijcmir VL - 6 IS - 2 UR - http://ijcm.ir/article-1-877-en.html Y1 - 1998 SP - 85 EP - 96 KW - SupercOnduclillg malerial KW - electron diffraction KW - Sintering atmo.~phere KW - homogeneity of composition N2 - The EDT A gel processing route has been used to produce (2223) BSCCO superconductiong oxides. Gel - processed (2223) BSCCO material was sintered in air or oxygen to produce specimens for transition temperature determination; the same specimens were characterised by high re.'ioultion transmission electron microscopy fitted with EDAX analysis to yield information about homogeneity, microstructure and identification of any grain boundary phases that may be present. Electrical resistivity ~"rew;:."", ~~"" btel ",le "1"'tI ~" .;tIerell ",.en.s to allow the superconducting transition temperature to be determined as a function of sintering atmosphere. Transition to a superconducting state at I 10k was observed in samples sintered and quenched in air M3 ER -