A new family of Pb based 1222 cuprates (Pb,Mg)(Sr,R)(2)(R',Ce)(2)Cu2Oy (R,R': rare-earth element)

作者：Luo HM^*; Qu B; Chen ZY; Qian YT; Yang L

来源：Physica C-Superconductivity and Its Applications, 1996, 270(3-4): 253-257.

DOI：10.1016/S0921-4534(96)00520-5

A series of new Pb based 1222 cuprates, (Pb,Mg)(Sr,R)(2)(R',Ce)(2)Cu2Oy, has been reported in this paper. The structure of the compounds has been determined by the powder X-ray diffraction method. It crystallizes in a tetragonal lattice with space group I4/mmm and lattice parameters a = 3.818 Angstrom and c = 29.085 Angstrom for R,R' = Nd,Dy. XRD results show that the structure is isostructural with (Pb,Cu)(Sr,R)(2)(R',Ce)(2)Cu2Oy with the (Pb,Mg)O layer replacing the (Pb,Cu)O layer. Resistivity measurements show that the compounds are semiconductors under the present experimental conditions.

• 出版日期1996-10-20
• 单位中国科学技术大学