BPSCCO superconducting films grown by spray pyrolysis technique:systematic study of the relationship between Pb content and annealing conditions

摘要：

　　Actually recent investigation in developing semiconducting-superconducting composites based in CdS and Bi-based superconductors has attracted interest in processing thin superconducting films.In this work are reported Bi-Pb-Sr-Ca-Cu-O (BPSCCO) thin films grown on MgO substrates by spray pyrolysis technique from a solution containing Bi(NO3)3,Pb(NO3)2,Sr(NO3)2,Ca(NO3)2 and Cu(NO3)2,with a subsequent solid state reaction for growing the Bi-based superconducting phases.Annealed films were characterized by X-ray diffraction,atomic absorption spectroscopy and resistance measurements.Interdependence between Pb content,annealing time and temperature,in the formation of superconducting phases was studied applying a fractional factorial design 3Ⅲ4-2.Interrelation between Pb content,ta and Ta exists.The presence of Pb is necessary to stabilize the high-Tc phase but its content depends on the annealing conditions.

关键词： Superconductivity BPSCCO superconducting films spray pyrolysis deposition Pb content annealing conditions experimental design

作者: Elvia D(i)az Valdés Concepción Mej(i)a Garc(i)a Ana Mar(i)a Paniagua Mercado Arturo Méndez Sánchez

作者单位: Departamento de Fisica, Escuela Superior de Fisica y Matemáticas-IPN Edif.9 UPALM Col.San Pedro Zacatenco, Deleg.GAM, México 07737 México

会议类型: 国际会议

会议名称: 2012年国际材料与化学工程研讨会

会议地点: 北京

会议语种:英文

页码: 92-95

在线出版日期: 2012-10-26（万方平台首次上网日期，不代表论文的发表时间）