New Materials Derived from Ybco: CrSr2RECu2O8 (RE = La, Pr, Nd, Eu, Gd, Tb, Dy, Y, Ho, Er, Lu).
New Materials Derived from Ybco: CrSr2RECu2O8 (RE = La, Pr, Nd, Eu, Gd, Tb, Dy, Y, Ho, Er, Lu).
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源自 Ybco 的新材料：CrSr2RECu2O8（RE = La、Pr、Nd、Eu、Gd、Tb、Dy、Y、Ho、Er、Lu）。
作者：
R. Ruiz;M. Aguirre;M. Alario
在高温高压条件下制备了11种新的氧化物，它们是由钇钡铜氧化物通过用八面体Cr（IV）取代三重钙钛矿基结构基面的正方形平面铜[Cu-O 4]而得到的。它们的晶体结构已被确定，其复杂的微观结构已被建立的高分辨电子显微镜和电子衍射。该材料的通式为CrSr 2 RECu 2 O 8（RE = La、Pr、Nd、Eu、Gd、Tb、Dy、Y、Ho、Er和Lu）;它们是四元晶系，显示空间群P4/mmm的对称性，并且似乎不是超导的。
Eleven new oxides, derived from yttrium barium copper oxide by replacing the square-planar copper [Cu-O4] of the basal plane of the triple perovskite-based structure with octahedral Cr(IV), have been prepared at high pressure and temperature. Their crystal structures have been determined, and their complex microstructure has been established by means of high-resolution electron microscopy and electron diffraction. The materials have a general formula of CrSr2RECu2O8 (RE = La, Pr, Nd, Eu, Gd, Tb, Dy, Y, Ho, Er, and Lu); they are tetragonal, show the symmetry of space group P4/mmm, and do not appear to be superconducting.