Optimal T C in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions
Neutron powder diffraction experiments on layered manganites La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (0.32{
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| Veröffentlicht in: | Physical review letters 1999-08, Vol.83 (6), p.1223-1226 |
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| container_end_page | 1226 |
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| container_issue | 6 |
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| container_title | Physical review letters |
| container_volume | 83 |
| creator | Medarde, M. Mitchell, J. F. Millburn, J. E. Short, S. Jorgensen, J. D. |
| description | Neutron powder diffraction experiments on layered manganites La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (0.32{ |
| doi_str_mv | 10.1103/PhysRevLett.83.1223 |
| format | Article |
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F. ; Millburn, J. E. ; Short, S. ; Jorgensen, J. D.</creator><creatorcontrib>Medarde, M. ; Mitchell, J. F. ; Millburn, J. E. ; Short, S. ; Jorgensen, J. D. ; Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><description>Neutron powder diffraction experiments on layered manganites La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (0.32{<=}x{<=}0.40) show that coherent lattice anomalies observed at the Curie temperature (lattice parameters, Mn-O bond lengths) reverse sign at x{approx}0.36, coinciding with the maximum T{sub c}{approx}131 K. Remarkably, the anomalies are completely suppressed at this crossover composition. Incoherent distortions, as measured by anisotropic Debye-Waller factors, undergo an abrupt decrease below T{sub c}. The magnitude of this anomaly changes very little with x and does not display any sign reversal for x{approx}0.36.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.83.1223</identifier><language>eng</language><publisher>United States</publisher><subject>BOND LENGTHS ; CURIE POINT ; DEBYE-WALLER FACTOR ; LANTHANUM OXIDES ; LATTICE PARAMETERS ; MANGANESE OXIDES ; MATERIALS SCIENCE ; NEUTRON DIFFRACTION ; STRONTIUM OXIDES ; TRANSITION TEMPERATURE</subject><ispartof>Physical review letters, 1999-08, Vol.83 (6), p.1223-1226</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c205t-c712944b7b9a33f6cefa8d73d5ab99266f7f2af88a1e8f799a659a3c4d6f257e3</citedby><cites>FETCH-LOGICAL-c205t-c712944b7b9a33f6cefa8d73d5ab99266f7f2af88a1e8f799a659a3c4d6f257e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,2874,2875,27922,27923</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/942628$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Medarde, M.</creatorcontrib><creatorcontrib>Mitchell, J. F.</creatorcontrib><creatorcontrib>Millburn, J. E.</creatorcontrib><creatorcontrib>Short, S.</creatorcontrib><creatorcontrib>Jorgensen, J. D.</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><title>Optimal T C in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions</title><title>Physical review letters</title><description>Neutron powder diffraction experiments on layered manganites La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (0.32{<=}x{<=}0.40) show that coherent lattice anomalies observed at the Curie temperature (lattice parameters, Mn-O bond lengths) reverse sign at x{approx}0.36, coinciding with the maximum T{sub c}{approx}131 K. Remarkably, the anomalies are completely suppressed at this crossover composition. Incoherent distortions, as measured by anisotropic Debye-Waller factors, undergo an abrupt decrease below T{sub c}. The magnitude of this anomaly changes very little with x and does not display any sign reversal for x{approx}0.36.</description><subject>BOND LENGTHS</subject><subject>CURIE POINT</subject><subject>DEBYE-WALLER FACTOR</subject><subject>LANTHANUM OXIDES</subject><subject>LATTICE PARAMETERS</subject><subject>MANGANESE OXIDES</subject><subject>MATERIALS SCIENCE</subject><subject>NEUTRON DIFFRACTION</subject><subject>STRONTIUM OXIDES</subject><subject>TRANSITION TEMPERATURE</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNpNkNtKAzEQhoMoWKtP4E18gK057Obgnaynwkql1OswzSY2UpOyCULf3i1V8GqYn2-GmQ-ha0pmlBJ--7bZ56X77lwpM8VnlDF-giaUSF1JSutTNCGE00oTIs_RRc6fhBDKhJogWOxK-IItXuEWh4g72LvB9fgV4gfEUFy-ww_B-zGMBS_T1mWcPG7T5phA7PE82r-2g1KCdeNILmkoIcV8ic48bLO7-q1T9P70uGpfqm7xPG_vu8oy0pTKSsp0Xa_lWgPnXljnQfWS9w2stWZCeOkZeKWAOuWl1iCakbR1LzxrpONTdHPcm3IJJtvxdruxKUZni9E1E0yNDD8ydkg5D86b3TB-P-wNJeZg0vwzaRQ3B5P8B2qZas8</recordid><startdate>19990801</startdate><enddate>19990801</enddate><creator>Medarde, M.</creator><creator>Mitchell, J. 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(ANL), Argonne, IL (United States)</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Medarde, M.</au><au>Mitchell, J. F.</au><au>Millburn, J. E.</au><au>Short, S.</au><au>Jorgensen, J. D.</au><aucorp>Argonne National Lab. (ANL), Argonne, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimal T C in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions</atitle><jtitle>Physical review letters</jtitle><date>1999-08-01</date><risdate>1999</risdate><volume>83</volume><issue>6</issue><spage>1223</spage><epage>1226</epage><pages>1223-1226</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>Neutron powder diffraction experiments on layered manganites La{sub 2-2x}Sr{sub 1+2x}Mn{sub 2}O{sub 7} (0.32{<=}x{<=}0.40) show that coherent lattice anomalies observed at the Curie temperature (lattice parameters, Mn-O bond lengths) reverse sign at x{approx}0.36, coinciding with the maximum T{sub c}{approx}131 K. Remarkably, the anomalies are completely suppressed at this crossover composition. Incoherent distortions, as measured by anisotropic Debye-Waller factors, undergo an abrupt decrease below T{sub c}. The magnitude of this anomaly changes very little with x and does not display any sign reversal for x{approx}0.36.</abstract><cop>United States</cop><doi>10.1103/PhysRevLett.83.1223</doi><tpages>4</tpages></addata></record> |
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| ispartof | Physical review letters, 1999-08, Vol.83 (6), p.1223-1226 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_osti_scitechconnect_942628 |
| source | American Physical Society Journals |
| subjects | BOND LENGTHS CURIE POINT DEBYE-WALLER FACTOR LANTHANUM OXIDES LATTICE PARAMETERS MANGANESE OXIDES MATERIALS SCIENCE NEUTRON DIFFRACTION STRONTIUM OXIDES TRANSITION TEMPERATURE |
| title | Optimal T C in Layered Manganites: Different Roles of Coherent and Incoherent Lattice Distortions |
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