用Ag替代而形成的La212型新化合物的合成、结构与电磁性质研究  

A Research On the Synthesis ,Structure and Electrical and Magnetic Properties of A New La212 Type Compound Formed by Substituting With Ag

作　　者：胥江河[1] 郑旭煦[2] 陈飒[3] 

机构地区：[1]渝州大学教务处,重庆400033 [2]渝州大学化学系,重庆400033 [3]西南师范大学化学化工学院,重庆400715

出　　处：《西南师范大学学报（自然科学版）》2001年第4期420-423,共4页Journal of Southwest China Normal University(Natural Science Edition)

摘　　要：用高温固相反应法合成了La2 -xAgxCaCu2 O6新化合物 .找到了最佳合成条件 .结构研究表明 :新化合物具有典型的La2 12型化合物晶体结构 ;La ,Ag占有 4e位置 ,Ca占有 2a位置 .La1 65Ag0 3 5CaCu2 O6的电阻与温度关系表现为金属行为 .New compound,La 2-x Ag x CaCu 2O 6 has been prepared by high temperature solid phase reaction. And its synthesizing conditions have been found. The research into its structure indicates that it has the typical crystal structure of La212 type compounds: La and Ag occupy the position of 4e,and Ca occupies that of 2a. The relationship between the resistance of La 1 65 Ag 0 35 CaCu 2O 6 and temperature has been characterized by metallic behavior.

关 键 词：La212型化合物 La2-xAgxCaCu2O6 合成 结构 电磁性质 氧化物超导体 

分 类 号：TM262[一般工业技术—材料科学与工程]