Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation

Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation

We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the ent...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nano letters 2007-02, Vol.7 (2), p.223-226
Hauptverfasser: Medeiros-Ribeiro, Gilberto, Williams, R Stanley
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 226
container_issue 2
container_start_page 223
container_title Nano letters
container_volume 7
creator Medeiros-Ribeiro, Gilberto
Williams, R Stanley
description We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the entropy of mixing, which drives GexSi1-x alloy formation, was significantly larger than the relaxation enthalpy that produces the islands. Thus, entropy plays a significant role in the evolution of the size and shape of the islands during growth through the strong thermodynamic drive to form an alloy.
doi_str_mv 10.1021/nl062530k
format Article
fullrecord <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_proquest_miscellaneous_69005832</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>69005832</sourcerecordid><originalsourceid>FETCH-LOGICAL-j275t-2ade147b2cb29063f71f61f579bcf6b54d467c682c64235d47080cefdbfe340d3</originalsourceid><addsrcrecordid>eNo1kD1PwzAQhj2AaCkM_AGUCcEQONuxnbChqhSkSgwtc-T4Q7gkdolTqfn3uKJMj_Te855Oh9ANhkcMBD_5FjhhFL7P0BQn5rwqiwm6jHELABVlcIEmWCRFsGqK_ObL9F3Qo5edUzELNlMhRcYP7ZjHoZfOG50tzWHtcH7IvPRB9WMcZJtkn63dPQB-eM5k24YxdbtdiG5waSS9zlxsj7Ch7-QxvELnNjXN9Ykz9Pm62Mzf8tXH8n3-ssq3RLAhJ1IbXIiGqIZUwKkV2HJsmagaZXnDCl1woXhJFC8IZboQUIIyVjfW0AI0naG7v727PvzsTRzqzkVl2nSNCftY8wqAlZQk8fYk7pvO6HrXu072Y_3_IfoLsVVmig</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>69005832</pqid></control><display><type>article</type><title>Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation</title><source>ACS Publications</source><creator>Medeiros-Ribeiro, Gilberto ; Williams, R Stanley</creator><creatorcontrib>Medeiros-Ribeiro, Gilberto ; Williams, R Stanley</creatorcontrib><description>We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the entropy of mixing, which drives GexSi1-x alloy formation, was significantly larger than the relaxation enthalpy that produces the islands. Thus, entropy plays a significant role in the evolution of the size and shape of the islands during growth through the strong thermodynamic drive to form an alloy.</description><identifier>ISSN: 1530-6984</identifier><identifier>DOI: 10.1021/nl062530k</identifier><identifier>PMID: 17253759</identifier><language>eng</language><publisher>United States</publisher><ispartof>Nano letters, 2007-02, Vol.7 (2), p.223-226</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17253759$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Medeiros-Ribeiro, Gilberto</creatorcontrib><creatorcontrib>Williams, R Stanley</creatorcontrib><title>Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation</title><title>Nano letters</title><addtitle>Nano Lett</addtitle><description>We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the entropy of mixing, which drives GexSi1-x alloy formation, was significantly larger than the relaxation enthalpy that produces the islands. Thus, entropy plays a significant role in the evolution of the size and shape of the islands during growth through the strong thermodynamic drive to form an alloy.</description><issn>1530-6984</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNo1kD1PwzAQhj2AaCkM_AGUCcEQONuxnbChqhSkSgwtc-T4Q7gkdolTqfn3uKJMj_Te855Oh9ANhkcMBD_5FjhhFL7P0BQn5rwqiwm6jHELABVlcIEmWCRFsGqK_ObL9F3Qo5edUzELNlMhRcYP7ZjHoZfOG50tzWHtcH7IvPRB9WMcZJtkn63dPQB-eM5k24YxdbtdiG5waSS9zlxsj7Ch7-QxvELnNjXN9Ykz9Pm62Mzf8tXH8n3-ssq3RLAhJ1IbXIiGqIZUwKkV2HJsmagaZXnDCl1woXhJFC8IZboQUIIyVjfW0AI0naG7v727PvzsTRzqzkVl2nSNCftY8wqAlZQk8fYk7pvO6HrXu072Y_3_IfoLsVVmig</recordid><startdate>20070201</startdate><enddate>20070201</enddate><creator>Medeiros-Ribeiro, Gilberto</creator><creator>Williams, R Stanley</creator><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20070201</creationdate><title>Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation</title><author>Medeiros-Ribeiro, Gilberto ; Williams, R Stanley</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j275t-2ade147b2cb29063f71f61f579bcf6b54d467c682c64235d47080cefdbfe340d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Medeiros-Ribeiro, Gilberto</creatorcontrib><creatorcontrib>Williams, R Stanley</creatorcontrib><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Nano letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Medeiros-Ribeiro, Gilberto</au><au>Williams, R Stanley</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation</atitle><jtitle>Nano letters</jtitle><addtitle>Nano Lett</addtitle><date>2007-02-01</date><risdate>2007</risdate><volume>7</volume><issue>2</issue><spage>223</spage><epage>226</epage><pages>223-226</pages><issn>1530-6984</issn><abstract>We determined the enthalpic and entropic contributions to the thermodynamics of coherently strained nanocrystals grown via deposition of pure Ge on Si(001) surfaces at 600 and 700 degrees C by analyzing their composition profile and local strain. We found that the free energy associated with the entropy of mixing, which drives GexSi1-x alloy formation, was significantly larger than the relaxation enthalpy that produces the islands. Thus, entropy plays a significant role in the evolution of the size and shape of the islands during growth through the strong thermodynamic drive to form an alloy.</abstract><cop>United States</cop><pmid>17253759</pmid><doi>10.1021/nl062530k</doi><tpages>4</tpages></addata></record>
fulltext fulltext
identifier ISSN: 1530-6984
ispartof Nano letters, 2007-02, Vol.7 (2), p.223-226
issn 1530-6984
language eng
recordid cdi_proquest_miscellaneous_69005832
source ACS Publications
title Thermodynamics of coherently-strained GexSi1-x nanocrystals on Si(001): alloy composition and island formation
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-06T16%3A43%3A14IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Thermodynamics%20of%20coherently-strained%20GexSi1-x%20nanocrystals%20on%20Si(001):%20alloy%20composition%20and%20island%20formation&rft.jtitle=Nano%20letters&rft.au=Medeiros-Ribeiro,%20Gilberto&rft.date=2007-02-01&rft.volume=7&rft.issue=2&rft.spage=223&rft.epage=226&rft.pages=223-226&rft.issn=1530-6984&rft_id=info:doi/10.1021/nl062530k&rft_dat=%3Cproquest_pubme%3E69005832%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=69005832&rft_id=info:pmid/17253759&rfr_iscdi=true