Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy
In multiferroic BiFeO3 a cycloidal antiferromagnetic structure is coupled to a large electric polarization at room temperature, giving rise to magnetoelectric functionality that may be exploited in novel multiferroic-based devices. In this paper, we demonstrate that substituting samarium for 10% of...
| Main Authors: | , , , , , |
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| 格式: | Journal article |
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American Physical Society
2017
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| _version_ | 1826286097981767680 |
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| author | Johnson, R McClarty, P Khalyavin, D Manuel, P Svedlindh, P Knee, C |
| author_facet | Johnson, R McClarty, P Khalyavin, D Manuel, P Svedlindh, P Knee, C |
| author_sort | Johnson, R |
| collection | OXFORD |
| description | In multiferroic BiFeO3 a cycloidal antiferromagnetic structure is coupled to a large electric polarization at room temperature, giving rise to magnetoelectric functionality that may be exploited in novel multiferroic-based devices. In this paper, we demonstrate that substituting samarium for 10% of the bismuth ions increases the periodicity of the room-temperature cycloid, and upon cooling to below ∼15 K the magnetic structure tends towards a simple G-type antiferromagnet, which is fully established at 1.5 K. We show that this transition results from f-d exchange coupling, which induces a local anisotropy on the iron magnetic moments that destroys the cycloidal order - a result of general significance regarding the stability of noncollinear magnetic structures in the presence of multiple magnetic sublattices. |
| first_indexed | 2024-03-07T01:38:44Z |
| format | Journal article |
| id | oxford-uuid:961c283d-6d6f-4de6-a9e1-6a8fbd2851a1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:38:44Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:961c283d-6d6f-4de6-a9e1-6a8fbd2851a12022-03-26T23:50:43ZTemperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:961c283d-6d6f-4de6-a9e1-6a8fbd2851a1Symplectic Elements at OxfordAmerican Physical Society2017Johnson, RMcClarty, PKhalyavin, DManuel, PSvedlindh, PKnee, CIn multiferroic BiFeO3 a cycloidal antiferromagnetic structure is coupled to a large electric polarization at room temperature, giving rise to magnetoelectric functionality that may be exploited in novel multiferroic-based devices. In this paper, we demonstrate that substituting samarium for 10% of the bismuth ions increases the periodicity of the room-temperature cycloid, and upon cooling to below ∼15 K the magnetic structure tends towards a simple G-type antiferromagnet, which is fully established at 1.5 K. We show that this transition results from f-d exchange coupling, which induces a local anisotropy on the iron magnetic moments that destroys the cycloidal order - a result of general significance regarding the stability of noncollinear magnetic structures in the presence of multiple magnetic sublattices. |
| spellingShingle | Johnson, R McClarty, P Khalyavin, D Manuel, P Svedlindh, P Knee, C Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title | Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title_full | Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title_fullStr | Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title_full_unstemmed | Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title_short | Temperature-induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic Bi0.9Sm0.1FeO3 driven by f-d induced magnetic anisotropy |
| title_sort | temperature induced phase transition from cycloidal to collinear antiferromagnetism in multiferroic bi0 9sm0 1feo3 driven by f d induced magnetic anisotropy |
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