Determination of surface debye temperatures by leed
The method to determine the surface Debye temperature by LEED beam intensity versus temperature measurements is critically evaluated. Simulated in( I) versus T plots obtained with the help of the Gallon-model using a kinematic approach for the specular beam at Bragg diffraction conditions are presen...
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| Veröffentlicht in: | Surface science 1987-10, Vol.189, p.695-703 |
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| container_title | Surface science |
| container_volume | 189 |
| creator | Delft, F.C.M.J.M. van Koster van Groos, M.J. Graaff, R.A.G. De Langeveld, A.D. Van Nieuwenhuys, B.E. |
| description | The method to determine the surface Debye temperature by LEED beam intensity versus temperature measurements is critically evaluated. Simulated in(
I) versus
T plots obtained with the help of the Gallon-model using a kinematic approach for the specular beam at Bragg diffraction conditions are presented. It is shown that the assumed linearity in these plots is fundamentally incorrect. With our newly developed model good agreement is obtained with experimentally determined effective Debye temperature versus electron energy plots for Pt(111), Pt(100), Rh(111) and Rh(100). However, it is shown that the method of electron energy variation is not reliable for straightforward determination of the surface Debye temperature, whereas variation of angle of incidence is better suitable. In addition, plots measured on a Pt-Rh(100) surface with a Pt surface content varying between 25 and 60 at% are compared with simulated plots for disordered and ordered alloys. |
| doi_str_mv | 10.1016/S0039-6028(87)80502-2 |
| format | Article |
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I) versus
T plots obtained with the help of the Gallon-model using a kinematic approach for the specular beam at Bragg diffraction conditions are presented. It is shown that the assumed linearity in these plots is fundamentally incorrect. With our newly developed model good agreement is obtained with experimentally determined effective Debye temperature versus electron energy plots for Pt(111), Pt(100), Rh(111) and Rh(100). However, it is shown that the method of electron energy variation is not reliable for straightforward determination of the surface Debye temperature, whereas variation of angle of incidence is better suitable. In addition, plots measured on a Pt-Rh(100) surface with a Pt surface content varying between 25 and 60 at% are compared with simulated plots for disordered and ordered alloys.</description><identifier>ISSN: 0039-6028</identifier><identifier>EISSN: 1879-2758</identifier><identifier>DOI: 10.1016/S0039-6028(87)80502-2</identifier><language>eng</language><publisher>Elsevier B.V</publisher><ispartof>Surface science, 1987-10, Vol.189, p.695-703</ispartof><rights>1987 Elsevier Science Publishers B.V. (North-Holland Physics Publishing Division)</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c338t-4f9a1895c69fb20452efc603799e564c23c0e6fb4e748cd8df18e42732ba4d563</citedby><cites>FETCH-LOGICAL-c338t-4f9a1895c69fb20452efc603799e564c23c0e6fb4e748cd8df18e42732ba4d563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0039602887805022$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Delft, F.C.M.J.M. van</creatorcontrib><creatorcontrib>Koster van Groos, M.J.</creatorcontrib><creatorcontrib>Graaff, R.A.G. De</creatorcontrib><creatorcontrib>Langeveld, A.D. Van</creatorcontrib><creatorcontrib>Nieuwenhuys, B.E.</creatorcontrib><title>Determination of surface debye temperatures by leed</title><title>Surface science</title><description>The method to determine the surface Debye temperature by LEED beam intensity versus temperature measurements is critically evaluated. Simulated in(
I) versus
T plots obtained with the help of the Gallon-model using a kinematic approach for the specular beam at Bragg diffraction conditions are presented. It is shown that the assumed linearity in these plots is fundamentally incorrect. With our newly developed model good agreement is obtained with experimentally determined effective Debye temperature versus electron energy plots for Pt(111), Pt(100), Rh(111) and Rh(100). However, it is shown that the method of electron energy variation is not reliable for straightforward determination of the surface Debye temperature, whereas variation of angle of incidence is better suitable. In addition, plots measured on a Pt-Rh(100) surface with a Pt surface content varying between 25 and 60 at% are compared with simulated plots for disordered and ordered alloys.</description><issn>0039-6028</issn><issn>1879-2758</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNqFkDtLBDEUhYMouK7-BGEq0WI0z0lSiaxPWLBQ65DJ3EBkXiYZYf-9s7ti621u850D50PonOBrgkl184Yx02WFqbpU8kphgWlJD9CCKKlLKoU6RIs_5BidpPSJ5-NaLBC7hwyxC73NYeiLwRdpit46KBqoN1Bk6EaINk8RUlFvihagOUVH3rYJzn7_En08Pryvnsv169PL6m5dOsZULrnXligtXKV9TTEXFLyrMJNag6i4o8xhqHzNQXLlGtV4ooBTyWhteSMqtkQX-94xDl8TpGy6kBy0re1hmJKhnHMqJJ9BsQddHFKK4M0YQ2fjxhBstorMTpHZ7jdKmp0iQ-fc7T4H84rvANEkF6B30IQILptmCP80_AAbRW0v</recordid><startdate>19871001</startdate><enddate>19871001</enddate><creator>Delft, F.C.M.J.M. van</creator><creator>Koster van Groos, M.J.</creator><creator>Graaff, R.A.G. De</creator><creator>Langeveld, A.D. Van</creator><creator>Nieuwenhuys, B.E.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19871001</creationdate><title>Determination of surface debye temperatures by leed</title><author>Delft, F.C.M.J.M. van ; Koster van Groos, M.J. ; Graaff, R.A.G. De ; Langeveld, A.D. Van ; Nieuwenhuys, B.E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c338t-4f9a1895c69fb20452efc603799e564c23c0e6fb4e748cd8df18e42732ba4d563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Delft, F.C.M.J.M. van</creatorcontrib><creatorcontrib>Koster van Groos, M.J.</creatorcontrib><creatorcontrib>Graaff, R.A.G. De</creatorcontrib><creatorcontrib>Langeveld, A.D. Van</creatorcontrib><creatorcontrib>Nieuwenhuys, B.E.</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Surface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Delft, F.C.M.J.M. van</au><au>Koster van Groos, M.J.</au><au>Graaff, R.A.G. De</au><au>Langeveld, A.D. Van</au><au>Nieuwenhuys, B.E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of surface debye temperatures by leed</atitle><jtitle>Surface science</jtitle><date>1987-10-01</date><risdate>1987</risdate><volume>189</volume><spage>695</spage><epage>703</epage><pages>695-703</pages><issn>0039-6028</issn><eissn>1879-2758</eissn><abstract>The method to determine the surface Debye temperature by LEED beam intensity versus temperature measurements is critically evaluated. Simulated in(
I) versus
T plots obtained with the help of the Gallon-model using a kinematic approach for the specular beam at Bragg diffraction conditions are presented. It is shown that the assumed linearity in these plots is fundamentally incorrect. With our newly developed model good agreement is obtained with experimentally determined effective Debye temperature versus electron energy plots for Pt(111), Pt(100), Rh(111) and Rh(100). However, it is shown that the method of electron energy variation is not reliable for straightforward determination of the surface Debye temperature, whereas variation of angle of incidence is better suitable. In addition, plots measured on a Pt-Rh(100) surface with a Pt surface content varying between 25 and 60 at% are compared with simulated plots for disordered and ordered alloys.</abstract><pub>Elsevier B.V</pub><doi>10.1016/S0039-6028(87)80502-2</doi><tpages>9</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| title | Determination of surface debye temperatures by leed |
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