Effect of uniaxial strain on the structural and magnetic phase transitions in BaFe2As2
We report neutron scattering experiments probing the influence of uniaxial strain on both the magnetic and structural order parameters in the parent iron pnictide compound, BaFe2As2. Our data show that modest strain fields along the in-plane orthorhombic b axis can affect significant changes in phas...
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| Veröffentlicht in: | Physical review letters 2012-02, Vol.108 (8), p.087001-087001 |
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| container_end_page | 087001 |
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| container_issue | 8 |
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| container_title | Physical review letters |
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| creator | Dhital, Chetan Yamani, Z Tian, Wei Zeretsky, J Sefat, A S Wang, Ziqiang Birgeneau, R J Wilson, Stephen D |
| description | We report neutron scattering experiments probing the influence of uniaxial strain on both the magnetic and structural order parameters in the parent iron pnictide compound, BaFe2As2. Our data show that modest strain fields along the in-plane orthorhombic b axis can affect significant changes in phase behavior simultaneous to the removal of structural twinning effects. As a result, we demonstrate in BaFe2As2 samples detwinned via uniaxial strain that the in-plane C4 symmetry is broken by both the structural lattice distortion and long-range spin ordering at temperatures far above the nominal (strain-free) phase transition temperatures. Surprising changes in the magnetic order parameter of this system under relatively small strain fields also suggest the inherent presence of magnetic domains fluctuating above the strain-free ordering temperature in this material. |
| doi_str_mv | 10.1103/PhysRevLett.108.087001 |
| format | Article |
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Surprising changes in the magnetic order parameter of this system under relatively small strain fields also suggest the inherent presence of magnetic domains fluctuating above the strain-free ordering temperature in this material.</description><subject>ARSENIC COMPOUNDS</subject><subject>BARIUM COMPOUNDS</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>IRON COMPOUNDS</subject><subject>MAGNETIC PROPERTIES</subject><subject>NEUTRON DIFFRACTION</subject><subject>ORDER PARAMETERS</subject><subject>PHASE TRANSFORMATIONS</subject><subject>PNICTIDES</subject><subject>REMOVAL</subject><subject>SCATTERING</subject><subject>SPIN</subject><subject>STRAINS</subject><subject>SYMMETRY</subject><subject>TRANSITION TEMPERATURE</subject><subject>TWINNING</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNo1kFFLwzAUhYMobk7_wgi--NR5k7RJ-zjHpsJAEfW1pOmtjbTpbFJx_97K5tPlcL9z4BxC5gwWjIG4fa73_gW_txjCgkG6gFQBsBMyZaCySDEWn5IpgGBRBqAm5ML7TxgJLtNzMuE8liJJ1JS8r6sKTaBdRQdn9Y_VDfWh19bRztFQ458aTBj68aFdSVv94TBYQ3e19khH1HkbbOc8HT13eoN86fklOat04_HqeGfkbbN-XT1E26f7x9VyGzkueIgki4UBoyooNY-5zDQClFVRCKPLNCky4FJkDLkRKo7LlHGWCCNKQCmEKRMxI9eH3M4Hm3tjA5radM6NnfJxJyXTeIRuDtCu774G9CFvrTfYNNphN_g8kyIVDNhf3PxIDkWLZb7rbav7ff6_l_gFB6ZuoA</recordid><startdate>20120224</startdate><enddate>20120224</enddate><creator>Dhital, Chetan</creator><creator>Yamani, Z</creator><creator>Tian, Wei</creator><creator>Zeretsky, J</creator><creator>Sefat, A S</creator><creator>Wang, Ziqiang</creator><creator>Birgeneau, R J</creator><creator>Wilson, Stephen D</creator><scope>NPM</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20120224</creationdate><title>Effect of uniaxial strain on the structural and magnetic phase transitions in BaFe2As2</title><author>Dhital, Chetan ; Yamani, Z ; Tian, Wei ; Zeretsky, J ; Sefat, A S ; Wang, Ziqiang ; Birgeneau, R J ; Wilson, Stephen D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-n232t-6143c0c7f0da24269ae00dfbb3cad85b9026391e2c3744d812153c3d0e633cd53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>ARSENIC COMPOUNDS</topic><topic>BARIUM COMPOUNDS</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>IRON COMPOUNDS</topic><topic>MAGNETIC PROPERTIES</topic><topic>NEUTRON DIFFRACTION</topic><topic>ORDER PARAMETERS</topic><topic>PHASE TRANSFORMATIONS</topic><topic>PNICTIDES</topic><topic>REMOVAL</topic><topic>SCATTERING</topic><topic>SPIN</topic><topic>STRAINS</topic><topic>SYMMETRY</topic><topic>TRANSITION TEMPERATURE</topic><topic>TWINNING</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dhital, Chetan</creatorcontrib><creatorcontrib>Yamani, Z</creatorcontrib><creatorcontrib>Tian, Wei</creatorcontrib><creatorcontrib>Zeretsky, J</creatorcontrib><creatorcontrib>Sefat, A S</creatorcontrib><creatorcontrib>Wang, Ziqiang</creatorcontrib><creatorcontrib>Birgeneau, R J</creatorcontrib><creatorcontrib>Wilson, Stephen D</creatorcontrib><creatorcontrib>Oak Ridge National Lab. 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As a result, we demonstrate in BaFe2As2 samples detwinned via uniaxial strain that the in-plane C4 symmetry is broken by both the structural lattice distortion and long-range spin ordering at temperatures far above the nominal (strain-free) phase transition temperatures. Surprising changes in the magnetic order parameter of this system under relatively small strain fields also suggest the inherent presence of magnetic domains fluctuating above the strain-free ordering temperature in this material.</abstract><cop>United States</cop><pmid>22463557</pmid><doi>10.1103/PhysRevLett.108.087001</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Physical review letters, 2012-02, Vol.108 (8), p.087001-087001 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | ARSENIC COMPOUNDS BARIUM COMPOUNDS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY IRON COMPOUNDS MAGNETIC PROPERTIES NEUTRON DIFFRACTION ORDER PARAMETERS PHASE TRANSFORMATIONS PNICTIDES REMOVAL SCATTERING SPIN STRAINS SYMMETRY TRANSITION TEMPERATURE TWINNING |
| title | Effect of uniaxial strain on the structural and magnetic phase transitions in BaFe2As2 |
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