Leed study of Fe epitaxially grown at 190°C on Cu(100)
We report a LEED study of iron deposited on Cu(100) at 190°C. Very sharp LEED patterns were obtained for high iron coverages. We observed evidence of an ill defined Fe/Cu interface for one monolayer of iron deposited at 190°C. The stability of the iron overlayers was tested as a function of time for...
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Published in | Surface science Vol. 217; no. 3; pp. 521 - 528 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
02.07.1989
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Online Access | Get full text |
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Summary: | We report a LEED study of iron deposited on Cu(100) at 190°C. Very sharp LEED patterns were obtained for high iron coverages. We observed evidence of an ill defined Fe/Cu interface for one monolayer of iron deposited at 190°C. The stability of the iron overlayers was tested as a function of time for various coverages. For one monolayer the intensity versus energy curve for the (00) beam shows time dependence at 190°C. For four layers, no significant changes were observed in the LEED spectra over a period of one hour. We measured for five layers of iron a top layer expansion of 2.8% relative to the bulk. The interplanar spacing for bulk fcc Fe at 190°C remains equal to the room value. In these experiments the samples were deposited at 190°C and kept at this temperature during the LEED measurements. |
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ISSN: | 0039-6028 1879-2758 |
DOI: | 10.1016/0039-6028(89)90445-7 |