La_(1.65)Sr_(0.35)CaCu_2O_(4+δ)Cl_y在高压下的电学性质与相变  

PHASE TRANSITIONS AND ELECTRONIC PROPERTIES OF La 1.65 Sr 0.35 CaCu 2O 4+ δ Cl y UNDER HIGH PRESSURE

作　　者：鲍忠兴[1,2] 徐丽雯[1,2] 车广灿[1,2] 柳翠霞[1,2] 陈红[1,2] 吴非[1,2] 赵忠贤[1,2] 

机构地区：[1]中国科学院物理研究所和凝聚态物理中心 [2]中国科学院国际材料物理中心

出　　处：《高压物理学报》1999年第1期30-33,共4页Chinese Journal of High Pressure Physics

摘　　要：利用金刚石压砧中的电阻测量技术和Ｘ射线衍射分析了在室温下和２２ＧＰａ压力范围内氯氧化合物超导材料Ｌａ１．６５Ｓｒ０．３５ＣａＣｕ２Ｏ４＋δＣｌｙ的相变行为。观测到了包括由晶相向非晶相转变在内的一些不可逆的相变。The pressure induced phase transitions,including some irreversible transitions from crystallite to noncrystallite,of copper oxy chloride superconductor La 1.65 Sr 0.35 CaCu 2O 4+ δ Cl y were studied by both the measurements of electronic resistance ( R ) dependance on pressure ( p ) and X ray diffraction techniques.The R p experiments were performed in the diamond anvil cell by resistance measurement technique at room temperature under pressures up to 22GPa.The interesting results were obtained and are presented first in this paper.

关 键 词：超导材料 高压 电阻 转变 电学性质 LSCCOC 

分 类 号：TM262.014[一般工业技术—材料科学与工程]