新相LaBa_2Cu_2MO_7（M＝Ga，Co）合成及其电学特征  

SYNTHESIS OF NEW PHASES LaBa_2Cu_2MO_7(M=Ga,Co)AND THEIR ELECTRIC PROPERTY

作　　者：吴兴才[1] 钱逸泰[1] 陈祖耀[1] 

机构地区：[1]淮南矿业学院化工系,中国科学技术大学应用化学系

出　　处：《化学研究与应用》1994年第4期27-31,共5页Chemical Research and Application

摘　　要：用固相反应法制备出ＬａＢａ＿２Ｃｕ＿２ＭＯ＿７（Ｍ＝Ｇａ，Ｃｏ）新相。Ｘ射线衍射分析认为其属四方晶系，Ｌａ－Ｂａ＿２Ｃｕ＿２ＧａＯ＿７的；ＬａＢａ＿２Ｃｕ＿２ＣｏＯ＿７的。电阻和温度关系曲线测定表明均为半导体。New phases:LaBa_2Cu_2MO_7(M=Ga, Co)were prepared by solid reaction。They were convicted as tetragonal,LaBa_2Cu_2GaO_7 with ,LaBa_2Cu_2CoO_7 with a=3.968 by X-ray diffraction. The curves of relativity of temperature and resistivityshow that they may be employed as semicondnctor.

关 键 词：稀土 铜基 新相 半导体 合成 

分 类 号：O743.3[理学—晶体学]