Dynamics of oxygen ordering in YBa2Cu3O6+x studied by neutron and high-energy synchrotron X-ray diffraction.

被引：5

作者：

Frello, T

Andersen, NH

Madsen, J

Kali, M

vonZimmermann, M

Schmidt, O

Poulsen, HF

Schneider, JR

Wolf, T

机构：

[1] HASYLAB,D-22603 HAMBURG,GERMANY

[2] FORSCHUNGSZENTRUM KARLSRUHE,D-76021 KARLSRUHE,GERMANY

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00649-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dynamics of the ortho-II oxygen structure in a high purity YBa2Cu3O6+x, single crystal with x=0.50 has been studied by neutron and by X-ray diffraction with a photon energy of 100 keV. Our data show that the oxygen order develops on two different time-scales, one of the order of seconds and a much slower of the order of weeks and months. The mechanism dominating the slow time-scale is related to oxygen diffusion, while the fast mechanism may result from a temperature-dependent change in the average oxygen chain length.

引用

页码：1089 / 1090

页数：2

共 6 条

[1] THE STRUCTURAL PHASE-DIAGRAM AND OXYGEN EQUILIBRIUM PARTIAL-PRESSURE OF YBA2CU3O6+X STUDIED BY NEUTRON POWDER DIFFRACTION AND GAS VOLUMETRY [J].