Atomic force microscopy study of the faceting on MgO(110) surface

被引：12

作者：

Chern, G ^{[1
]}

Huang, JJ ^{[1
]}

Leung, TC ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Phys, Chiayi, Taiwan

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1998年 / 16卷 / 03期

关键词：

D O I：

10.1116/1.581279

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using atomic force microscopy, we have studied the morphologies of the MgO(110) surface. After annealing at 650 degrees C, this surface facets into elongated triangular mesoscale islands along the [001] direction. A statistical counting of both the widths and the heights of these islands can be well fitted by a Gaussian normal distribution. The most popular island width and height are similar to 1200 and 140 Angstrom, respectively, indicating that these faces are roughly (350). The formation of (350) plans, instead of (100), is believed due to a kinetic reason. Besides, both Gaussian distributions an much narrower than predicted for the microscopic terrace-step-kink model. This result may suggest that an island-island interaction is fundamentally different from a step-step interaction. (C) 1998 American Vacuum Society.

引用

页码：964 / 967

页数：4

共 10 条

[1] SPATIAL PATTERN-FORMATION IN A CATALYTIC SURFACE-REACTION - THE FACETING OF PT(110) IN CO+O2 [J].