Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2
The evolution of the structure, magnetic ordering, and superconductivity in the series Ba1-xNaxFe2As2 is reported up to the limiting Na-rich composition with x = 0.6; the more Na-rich compositions are unstable at high temperatures with respect to competing phases. The magnetic and superconducting be...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1826292344077418496 |
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| author | Cortes-Gil, R Parker, DR Pitcher, M Hadermann, J Clarke, S |
| author_facet | Cortes-Gil, R Parker, DR Pitcher, M Hadermann, J Clarke, S |
| author_sort | Cortes-Gil, R |
| collection | OXFORD |
| description | The evolution of the structure, magnetic ordering, and superconductivity in the series Ba1-xNaxFe2As2 is reported up to the limiting Na-rich composition with x = 0.6; the more Na-rich compositions are unstable at high temperatures with respect to competing phases. The magnetic and superconducting behaviors of the Ba1-xNa xFe2As2 members are similar to those of the better-investigated Ba1-xKxFe2As2 analogues. This is evidently a consequence of the quantitatively similar evolution of the structure of the FeAs layers in the two series. In Ba 1-xNaxFe2As2 antiferromagnetic order and an associated structural distortion are evident for x ≤ 0.35 and superconductivity is evident when x exceeds 0.2. For 0.4 ≤ x ≤ 0.6 bulk superconductivity is evident, and the long-range antiferromagnetically ordered state is completely suppressed. The maximum Tc in the Ba 1-xNaxFe2As2 series, as judged by the onset of diamagnetism, is 34 K in Ba0.6Na0.4Fe 2As2. Despite the large mis-match in sizes between the two electropositive cations which separate the FeAs layers, there is no evidence for ordering of these cations on the length scale probed by electron diffraction. © 2010 American Chemical Society. |
| first_indexed | 2024-03-07T03:13:14Z |
| format | Journal article |
| id | oxford-uuid:b4eba67a-c084-4e11-9d01-e67ac6401f6e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:13:14Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:b4eba67a-c084-4e11-9d01-e67ac6401f6e2022-03-27T04:29:34ZIndifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b4eba67a-c084-4e11-9d01-e67ac6401f6eEnglishSymplectic Elements at Oxford2010Cortes-Gil, RParker, DRPitcher, MHadermann, JClarke, SThe evolution of the structure, magnetic ordering, and superconductivity in the series Ba1-xNaxFe2As2 is reported up to the limiting Na-rich composition with x = 0.6; the more Na-rich compositions are unstable at high temperatures with respect to competing phases. The magnetic and superconducting behaviors of the Ba1-xNa xFe2As2 members are similar to those of the better-investigated Ba1-xKxFe2As2 analogues. This is evidently a consequence of the quantitatively similar evolution of the structure of the FeAs layers in the two series. In Ba 1-xNaxFe2As2 antiferromagnetic order and an associated structural distortion are evident for x ≤ 0.35 and superconductivity is evident when x exceeds 0.2. For 0.4 ≤ x ≤ 0.6 bulk superconductivity is evident, and the long-range antiferromagnetically ordered state is completely suppressed. The maximum Tc in the Ba 1-xNaxFe2As2 series, as judged by the onset of diamagnetism, is 34 K in Ba0.6Na0.4Fe 2As2. Despite the large mis-match in sizes between the two electropositive cations which separate the FeAs layers, there is no evidence for ordering of these cations on the length scale probed by electron diffraction. © 2010 American Chemical Society. |
| spellingShingle | Cortes-Gil, R Parker, DR Pitcher, M Hadermann, J Clarke, S Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title | Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title_full | Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title_fullStr | Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title_full_unstemmed | Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title_short | Indifference of Superconductivity and Magnetism to Size-Mismatched Cations in the Layered Iron Arsenides Ba1-xNaxFe2As2 |
| title_sort | indifference of superconductivity and magnetism to size mismatched cations in the layered iron arsenides ba1 xnaxfe2as2 |
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