Disorder in Al-Li-Cu and Al-Mn-Si Icosahedral Alloys
Faceted dendrites of icosahedral Al$_{6}$Li$_{3}$Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of well-defined facets, the samples have a hig...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1987-10, Vol.238 (4827), p.660-663 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Heiney, P. A. Bancel, P. A. Horn, P. M. Jordan, J. L. LaPlaca, S. Angilello, J. Gayle, F. W. |
| description | Faceted dendrites of icosahedral Al$_{6}$Li$_{3}$Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of well-defined facets, the samples have a high degree of atomic disorder. The Bragg peaks have symmetry-dependent shapes and widths that scale linearly with G$_{\perp}$ (phason momentum). The peak widths are surprisingly similar to those found in icosahedral Al-Mn-Si alloys in both their absolute magnitude and their dependence on G$_{\perp}$. The origin of these features in models for the icosahedral phase is discussed. |
| doi_str_mv | 10.1126/science.238.4827.660 |
| format | Article |
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A. ; Bancel, P. A. ; Horn, P. M. ; Jordan, J. L. ; LaPlaca, S. ; Angilello, J. ; Gayle, F. W.</creator><creatorcontrib>Heiney, P. A. ; Bancel, P. A. ; Horn, P. M. ; Jordan, J. L. ; LaPlaca, S. ; Angilello, J. ; Gayle, F. W.</creatorcontrib><description>Faceted dendrites of icosahedral Al$_{6}$Li$_{3}$Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of well-defined facets, the samples have a high degree of atomic disorder. The Bragg peaks have symmetry-dependent shapes and widths that scale linearly with G$_{\perp}$ (phason momentum). The peak widths are surprisingly similar to those found in icosahedral Al-Mn-Si alloys in both their absolute magnitude and their dependence on G$_{\perp}$. The origin of these features in models for the icosahedral phase is discussed.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.238.4827.660</identifier><identifier>PMID: 17816544</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: The American Association for the Advancement of Science</publisher><subject>Alloys ; Applied sciences ; Chemistry ; Crystal lattices ; Crystals ; Dendrites ; Diffraction ; Electromagnetic scattering ; Electromagnetic waves ; Exact sciences and technology ; Icosahedrons ; Mathematical lattices ; Other techniques and industries ; Rapid quenching ; Scattering ; Symmetry ; Tiling ; Vertices ; Wave diffraction ; X-ray diffraction ; X-rays</subject><ispartof>Science (American Association for the Advancement of Science), 1987-10, Vol.238 (4827), p.660-663</ispartof><rights>Copyright 1987 The American Association for the Advancement of Science</rights><rights>1989 INIST-CNRS</rights><rights>COPYRIGHT 1987 American Association for the Advancement of Science</rights><rights>COPYRIGHT 1987 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science Oct 30, 1987</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c776t-aa60d57c59da5a19d25af08d6ca61279fb548fd0c6ae548cb3d349efaed857203</citedby><cites>FETCH-LOGICAL-c776t-aa60d57c59da5a19d25af08d6ca61279fb548fd0c6ae548cb3d349efaed857203</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/1700484$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/1700484$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,2884,2885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7073491$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17816544$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Heiney, P. A.</creatorcontrib><creatorcontrib>Bancel, P. A.</creatorcontrib><creatorcontrib>Horn, P. M.</creatorcontrib><creatorcontrib>Jordan, J. L.</creatorcontrib><creatorcontrib>LaPlaca, S.</creatorcontrib><creatorcontrib>Angilello, J.</creatorcontrib><creatorcontrib>Gayle, F. W.</creatorcontrib><title>Disorder in Al-Li-Cu and Al-Mn-Si Icosahedral Alloys</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>Faceted dendrites of icosahedral Al$_{6}$Li$_{3}$Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of well-defined facets, the samples have a high degree of atomic disorder. The Bragg peaks have symmetry-dependent shapes and widths that scale linearly with G$_{\perp}$ (phason momentum). The peak widths are surprisingly similar to those found in icosahedral Al-Mn-Si alloys in both their absolute magnitude and their dependence on G$_{\perp}$. The origin of these features in models for the icosahedral phase is discussed.</description><subject>Alloys</subject><subject>Applied sciences</subject><subject>Chemistry</subject><subject>Crystal lattices</subject><subject>Crystals</subject><subject>Dendrites</subject><subject>Diffraction</subject><subject>Electromagnetic scattering</subject><subject>Electromagnetic waves</subject><subject>Exact sciences and technology</subject><subject>Icosahedrons</subject><subject>Mathematical lattices</subject><subject>Other techniques and industries</subject><subject>Rapid quenching</subject><subject>Scattering</subject><subject>Symmetry</subject><subject>Tiling</subject><subject>Vertices</subject><subject>Wave diffraction</subject><subject>X-ray diffraction</subject><subject>X-rays</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNqN0k1v0zAYB_AIgVgZfIMJVQixw0ix49ccS4FSqdDDgKvl2k-KqzTe7ETavv1cJYKCKqh88Et-fizH_yy7wGiCccHfReOgMTApiJxQWYgJ5-hRNsKoZHlZIPI4GyFEeC6RYGfZsxi3CKVvJXmanWEhMWeUjjL6wUUfLISxa8bTOl-6fNaNdWP3ky9Nfu3GC-Oj_gk26Dot1v4-Ps-eVLqO8GLoz7Pvnz5-m33Ol6v5YjZd5kYI3uZac2SZMKy0mmlc2oLpCknLjea4EGW1ZlRWFhmuIY3MmlhCS6g0WMlEusJ5dtnXvQn-toPYqp2LBupaN-C7qAQhBSaCFkm--ackDFPOMf4vLCglJZMywVd_wa3vQpOuq9KZjCBa7qtd9Wija1CuqXwbtNlAA-ln-QYql5anHMmScZH02yM6NQs7Z47wyz94Ei3ctRvdxagW119Plasfp8r38xOlnC8P5dUxaXxdwwZUSsRsdahpr03wMQao1E1wOx3uFUZqH2w1BFulYKt9sFUKdtr2cniObr0D-3vTkOQEXg9AR6PrKujGuPjLCSRI_2IXPdvG1oeDMghRSckDkp4Eeg</recordid><startdate>19871030</startdate><enddate>19871030</enddate><creator>Heiney, P. 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A.</au><au>Bancel, P. A.</au><au>Horn, P. M.</au><au>Jordan, J. L.</au><au>LaPlaca, S.</au><au>Angilello, J.</au><au>Gayle, F. W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Disorder in Al-Li-Cu and Al-Mn-Si Icosahedral Alloys</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1987-10-30</date><risdate>1987</risdate><volume>238</volume><issue>4827</issue><spage>660</spage><epage>663</epage><pages>660-663</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Faceted dendrites of icosahedral Al$_{6}$Li$_{3}$Cu have been studied by high-resolution x-ray scattering. The samples display long-range icosahedral symmetry both in their diffraction patterns and in their macroscopic morphology. Despite the appearance of well-defined facets, the samples have a high degree of atomic disorder. The Bragg peaks have symmetry-dependent shapes and widths that scale linearly with G$_{\perp}$ (phason momentum). The peak widths are surprisingly similar to those found in icosahedral Al-Mn-Si alloys in both their absolute magnitude and their dependence on G$_{\perp}$. The origin of these features in models for the icosahedral phase is discussed.</abstract><cop>Washington, DC</cop><pub>The American Association for the Advancement of Science</pub><pmid>17816544</pmid><doi>10.1126/science.238.4827.660</doi><tpages>4</tpages></addata></record> |
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| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1987-10, Vol.238 (4827), p.660-663 |
| issn | 0036-8075 1095-9203 |
| language | eng |
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| source | JSTOR Archive Collection A-Z Listing; American Association for the Advancement of Science |
| subjects | Alloys Applied sciences Chemistry Crystal lattices Crystals Dendrites Diffraction Electromagnetic scattering Electromagnetic waves Exact sciences and technology Icosahedrons Mathematical lattices Other techniques and industries Rapid quenching Scattering Symmetry Tiling Vertices Wave diffraction X-ray diffraction X-rays |
| title | Disorder in Al-Li-Cu and Al-Mn-Si Icosahedral Alloys |
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