| CO和K在Fe(110)面共吸附的高分辨电子能量损失谱研究 |
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| 引用本文： | 朱立,鲍世宁,徐亚伯,王浭.CO和K在Fe(110)面共吸附的高分辨电子能量损失谱研究[J].物理学报,1990,39(10):1691-1696. |
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| 作者姓名： | 朱立 鲍世宁 徐亚伯 王浭 |
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| 作者单位： | (1)浙江大学物理系,杭州,310027; (2)中国科学院表面物理开放研究实验室,北京,100080 |
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| 基金项目： | 国家自然科学基金资助的课题 |
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| 摘 要： | 本工作用高分辨电子能量损失谱(HREELS)对Fe(110)面CO和K的共吸附进行了研究,发现存在三种CO吸附状态,表现为不同的C—O振动频率,当θk=0.03时,存在与K近程、中程和远程三种不同相互作用的CO,当θk=0.06时,与K远程作用的CO吸附状态消失,近程作用的CO占据主要地位,所有CO的C—O振动频率均随CO暴露量的增加向高波数方向移动,随着表面K的增多,CO—Fe振动损失峰消失。
关键词：
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| 关 键 词： | CO K Fe 共吸附 HREELS |
| 收稿时间： | 1989-11-24 |
HREELS INVESTIGATION OF CO AND POTASSIUM CO-ADSORPTION ON Fe(110) |
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| ZHU LI,BAO SHI-NING,XU YA-BO and WANG GENG.HREELS INVESTIGATION OF CO AND POTASSIUM CO-ADSORPTION ON Fe(110)[J].Acta Physica Sinica,1990,39(10):1691-1696. |
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| Authors: | ZHU LI BAO SHI-NING XU YA-BO and WANG GENG |
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| Abstract: | Co-adsorption of CO and potassium on Fe(110) is investigated by HREELS. We find three CO adsorption states, with different C-O stretching frequencies. When θk=0.03, the three loss peaks are ascribed to three kinds of interactions i.e., short-range, medium-range and long-range interaction. When θk = 0.06, the long-range interaction adsorption state disappears, but the short-range state dominats. All C-O stretching frequencies shift to higher wavenum-ber with the increasing of CO exposure. CO-Fe loss peak disappears with the increasing of potassium atoms on the surface. |
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