Low-energy ion scattering study of Al(110) thermal disordering

被引:11
作者
Pedemonte, L
Bracco, G
Robin, A
Heiland, W
机构
[1] Univ Genoa, Dipartimento Fis, Ist Nazl Fis Mat, I-16146 Genoa, Italy
[2] CNR, CFSBT, I-16146 Genoa, Italy
[3] Univ Osnabruck, FB Phys, D-49069 Osnabruck, Germany
关键词
low-energy ion scattering; aluminum; low index single crystal surfaces; surface structure; surface melting;
D O I
10.1016/S0168-583X(02)00848-0
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The evolution of thermal disorder on the (110) surface of aluminum is investigated along the <1 (1) over bar0> azimuthal direction in the temperature range between 300 and 900 K by low-energy ion scattering. Surface blocking and channeling mode and neutral impact collision ion scattering spectroscopy are used. Information is gained about the proliferation of point defects and surface roughness below the surface melting point. Surface premelting is observed using a new technique, i.e. investigating the evolution of the channeling peak with temperature. Experimental evidence for residual short range order within the quasi-liquid layer is obtained. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:563 / 567
页数:5
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