Nanocomposite indium tin oxide thin films: formation induced by a large oxygen deficiency and properties.
Identifieur interne : 001860 ( Main/Exploration ); précédent : 001859; suivant : 001861Nanocomposite indium tin oxide thin films: formation induced by a large oxygen deficiency and properties.
Auteurs : RBID : pubmed:21386308Abstract
We report on the formation and properties of nanocomposite indium tin oxide thin films which are grown by pulsed-electron beam deposition under a low oxygen pressure leading to the formation of highly non-stoichiometric indium tin oxide films. For growth at room temperature these films are amorphous and insulating, while at higher temperatures, the oxygen deficiency leads to a disproportionation reaction with the formation of metallic clusters (indium or indium tin clusters) embedded in a stoichiometric crystalline indium tin oxide. This matrix is well crystallized and even epitaxial for growth on c-cut sapphire single crystal substrates. The presence of the metallic clusters induces specific transport properties, i.e. a metallic conductivity at room temperature followed by a superconducting transition at low temperature (about 6 K). Moreover, the solid-liquid and liquid-solid phase transitions in the metallic clusters can be clearly seen from the resistivity curves as a function of temperature (in the room temperature to 450 K range), through specific changes in resistivity and the appearance of a hysteresis cycle.
DOI: 10.1088/0953-8984/22/4/045006
PubMed: 21386308
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For growth at room temperature these films are amorphous and insulating, while at higher temperatures, the oxygen deficiency leads to a disproportionation reaction with the formation of metallic clusters (indium or indium tin clusters) embedded in a stoichiometric crystalline indium tin oxide. This matrix is well crystallized and even epitaxial for growth on c-cut sapphire single crystal substrates. The presence of the metallic clusters induces specific transport properties, i.e. a metallic conductivity at room temperature followed by a superconducting transition at low temperature (about 6 K). Moreover, the solid-liquid and liquid-solid phase transitions in the metallic clusters can be clearly seen from the resistivity curves as a function of temperature (in the room temperature to 450 K range), through specific changes in resistivity and the appearance of a hysteresis cycle.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="PubMed-not-MEDLINE"><PMID Version="1">21386308</PMID><DateCreated><Year>2011</Year><Month>03</Month><Day>09</Day></DateCreated><DateCompleted><Year>2011</Year><Month>08</Month><Day>09</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1361-648X</ISSN><JournalIssue CitedMedium="Internet"><Volume>22</Volume><Issue>4</Issue><PubDate><Year>2010</Year><Month>Feb</Month><Day>3</Day></PubDate></JournalIssue><Title>Journal of physics. Condensed matter : an Institute of Physics journal</Title><ISOAbbreviation>J Phys Condens Matter</ISOAbbreviation></Journal><ArticleTitle>Nanocomposite indium tin oxide thin films: formation induced by a large oxygen deficiency and properties.</ArticleTitle><Pagination><MedlinePgn>045006</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1088/0953-8984/22/4/045006</ELocationID><Abstract><AbstractText>We report on the formation and properties of nanocomposite indium tin oxide thin films which are grown by pulsed-electron beam deposition under a low oxygen pressure leading to the formation of highly non-stoichiometric indium tin oxide films. For growth at room temperature these films are amorphous and insulating, while at higher temperatures, the oxygen deficiency leads to a disproportionation reaction with the formation of metallic clusters (indium or indium tin clusters) embedded in a stoichiometric crystalline indium tin oxide. This matrix is well crystallized and even epitaxial for growth on c-cut sapphire single crystal substrates. The presence of the metallic clusters induces specific transport properties, i.e. a metallic conductivity at room temperature followed by a superconducting transition at low temperature (about 6 K). Moreover, the solid-liquid and liquid-solid phase transitions in the metallic clusters can be clearly seen from the resistivity curves as a function of temperature (in the room temperature to 450 K range), through specific changes in resistivity and the appearance of a hysteresis cycle.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Nistor</LastName><ForeName>M</ForeName><Initials>M</Initials><Affiliation>National Institute for Lasers, Plasma and Radiation Physics, Plasma Physics and Nuclear Fusion Laboratory, Bucharest-Magurele, Romania.</Affiliation></Author><Author ValidYN="Y"><LastName>Perrière</LastName><ForeName>J</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Hebert</LastName><ForeName>C</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Seiler</LastName><ForeName>W</ForeName><Initials>W</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>01</Month><Day>12</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Phys Condens Matter</MedlineTA><NlmUniqueID>101165248</NlmUniqueID><ISSNLinking>0953-8984</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2010</Year><Month>1</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0953-8984(10)32833-5</ArticleId><ArticleId IdType="doi">10.1088/0953-8984/22/4/045006</ArticleId><ArticleId IdType="pubmed">21386308</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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