FACETING TRANSFORMATIONS OF THE STEPPED PT(001) SURFACE

被引：52

作者：

WATSON, GM

GIBBS, D

ZEHNER, DM

YOON, M

MOCHRIE, SGJ

机构：

[1] OAK RIDGE NATL LAB,DIV SOLID STATE,OAK RIDGE,TN 37831

[2] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.71.3166

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe x-ray scattering studies of the structure and morphology of a stepped Pt(001) surface between 300 and 1850 K. Two distinct faceting transformations are observed. Above 1820 K, we find an unreconstructed, stepped surface. Between 1820 and 1620 K, there is coexistence among hexagonally reconstructed, step-free domains and unreconstructed, stepped domains. The tilt angle of the unreconstructed domains exhibits a one-half power-law dependence on reduced temperature. At 1620 K, there is a second morphological transformation at which the unreconstructed domains are replaced by magic vicinals.

引用

页码：3166 / 3169

页数：4

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