Surface Phases in Binary Liquid Metal Alloys
摘要
Surface sensitive x-ray scattering techniques with atomic scale resolution are employed to investigate the microscopic structure of the surface of three classes of liquid binary alloys: (i) Surface segregation in partly miscible binary alloys as predicted by the Gibbs adsorption rule is investigated for Ga-In. The first layer consists of a supercooled In monolayer and the bulk composition is reached after about two atomic diameters. (ii) The Ga-Bi system displays a wetting transition at a characteristic temperature T_w~220 C. The transition from a Bi monolayer on Ga below T_w to a thick Bi-rich wetting film above T_w is studied. (iii) The effect of attractive interactions between the two components of a binary alloy on the surface structure is investigated for two Hg-Au alloys.
引用
@article{arxiv.cond-mat/0412112,
title = {Surface Phases in Binary Liquid Metal Alloys},
author = {Holger Tostmann and Elaine DiMasi and Oleg G. Shpyrko and Ben M. Ocko and Peter S. Pershan and Moshe Deutsch},
journal= {arXiv preprint arXiv:cond-mat/0412112},
year = {2007}
}
备注
20 pages, 6 figures, published in Ber. Bunsenges. Phys. Chem