VARIABLE NATURE OF TWIN BOUNDARIES IN YBA2CU3O7-DELTA AND ITS ALLOYS

被引：46

作者：

ZHU, YM ^{[1
]}

SUENAGA, M ^{[1
]}

TAFTO, J ^{[1
]}

WELCH, DO ^{[1
]}

机构：

[1] UNIV OSLO,DEPT PHYS,OSLO 3,NORWAY

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.44.2871

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-resolution electron microscopy and electron diffraction of YBa2(Cu0.98M0.02)3O7-delta with M = Zn, Ni, Al, Fe, Cu indicate that twin boundaries are centered on (110) planes through the O atoms in the CuO layer for delta almost-equal-to 0 and M-Ni, Zn, or Cu, accompanied by a displacement of the cation sublattices across the boundary. Oxygen deficiency causes a shift of the center of twin boundaries to (110) planes through the cations and eliminates the cation-sublattice displacement, while solutes M = Al or Fc (even for oxygen content in excess of 7.00) substantially reduce the magnitude of the cation-sublattice displacement.

引用

页码：2871 / 2874

页数：4

共 22 条

[1] OXYGEN ORDERING AND TWINNING IN YBA2CU3O7-X [J].