Low energy ion scattering investigation of the order-disorder transition in the first atomic layer of the Cu3Au(100) surface.
Low energy ion scattering investigation of the order-disorder transition in the first atomic layer of the Cu3Au(100) surface.
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Cu3Au(100) 表面第一原子层有序-无序转变的低能离子散射研究。
DOI：
10.1103/physrevlett.75.4646
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发表时间：
1995
影响因子：
8.6
通讯作者：
O'connor
中科院分区：
文献类型：
--
作者：
Zhang;King;O'connor
本文首次报道用低能离子散射（LEIS）方法研究有序参数。用LEIS方法研究了Cu Au（100）第一原子层的短程有序参数随温度的变化关系.与体相相比，第一层中的有序-无序转变似乎是温度的连续函数。发现第一原子层中的跃迁开始于约500 K。此外，这项工作表明，首次，在合金表面的局部秩序，可以研究低能离子散射灵敏度为一个单层。
The first investigation of order parameter by low energy ion scattering (LEIS) is reported here. The temperature dependence of the short-range order parameter for the first atomic layer of Cu 3 Au (100) was studied by LEIS using K+ scattered from Au-Au pairs. In contrast to the bulk, the order-disorder transition in the first layer appears to be a continuous function of the temperature. It was found that the transition in the first atomic layer starts at about 500 K. Moreover, this work shows, for the first time, that the local order at alloy surface can be studied by low energy ion scattering with sensitivity to one monolayer.