Cyclic ozone identified in magnesium oxide (111) surface reconstructions

被引:98
作者
Plass, R [1 ]
Egan, K
Collazo-Davila, C
Grozea, D
Landree, E
Marks, LD
Gajdardziska-Josifovska, M
机构
[1] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA
[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
关键词
D O I
10.1103/PhysRevLett.81.4891
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report the first experimental evidence of the cyclic form of ozone, found in three air stable surface reconstructions of MgO (111) annealed above 1450 degrees C. The MgO (111)-(root 3 x root 3)R30 degrees surface consists of equilateral oxygen trimers while the MgO (111)-(2 x 2) and MgO (111)-(2 root 3 x 2 root 3)R30 degrees surfaces are periodic arrangements of trimers and single oxygen atoms. The oxygen trimers appear to be centered over underlying Mg atoms. The structures fit transmission electron diffraction data better than neutral plane faceting based models proposed for the polar MgO (111) surface. [S0031-9007(98)07807-7].
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页码:4891 / 4894
页数:4
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