TIME-RESOLVED STRUCTURAL STUDIES OF THE LOW-INDEX FACES OF LEAD

被引:26
作者
HERMAN, JW [1 ]
ELSAYEDALI, HE [1 ]
机构
[1] UNIV ROCHESTER,DEPT PHYS & ASTRON,ROCHESTER,NY 14627
来源
PHYSICAL REVIEW B | 1994年 / 49卷 / 07期
关键词
D O I
10.1103/PhysRevB.49.4886
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Reflection high-energy electron diffraction with 200-ps time resolution is used to study the structural behavior of the three low-index faces of Pb. The surfaces are subjected to heating and cooling rates on the order of 10(11) K/s. The open Pb(110) surface is seen to reversibly disorder below the bulk melting temperature, T(m). In contrast to Pb(110), the close-packed Pb(111) surface sustains superheating to T(m) + 120 K. Pb(100), a surface with atomic packing intermediate to that of Pb(110) and Pb(111), shows evidence of residual order at a temperature above the bulk melting point.
引用
收藏
页码:4886 / 4897
页数:12
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