Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001)
The magnetic microstructure of single-crystalline MnAs films on GaAs(001) has been investigated. Magnetic force microscopy (MFM) reveals a three-dimensional magnetization pattern that is in disagreement with the simple domain picture observed by surface-sensitive magnetic imaging. Here, we present a...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2007
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| _version_ | 1826298753796014080 |
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| author | Engel-Herbert, R Hesjedal, T Schaadt, D |
| author_facet | Engel-Herbert, R Hesjedal, T Schaadt, D |
| author_sort | Engel-Herbert, R |
| collection | OXFORD |
| description | The magnetic microstructure of single-crystalline MnAs films on GaAs(001) has been investigated. Magnetic force microscopy (MFM) reveals a three-dimensional magnetization pattern that is in disagreement with the simple domain picture observed by surface-sensitive magnetic imaging. Here, we present a consistent micromagnetic picture of MnAs thin films in the ferromagnetic stripe phase, which appears in the course of the phase transition. A number of equilibrium magnetization patterns of the stripes are found that are, in fact, based on flux-closure domain patterns in the basal plane of MnAs. The simulation of a stripe array yields excellent agreement with the measured surface magnetization. The experimentally observed stray field contrast was confirmed by MFM contrast simulations based on these equilibrium magnetization patterns. © 2007 American Institute of Physics. |
| first_indexed | 2024-03-07T04:51:38Z |
| format | Journal article |
| id | oxford-uuid:d528b4f1-da0c-4295-881d-a97e8b04a9ad |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:51:38Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:d528b4f1-da0c-4295-881d-a97e8b04a9ad2022-03-27T08:23:58ZThree-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d528b4f1-da0c-4295-881d-a97e8b04a9adEnglishSymplectic Elements at Oxford2007Engel-Herbert, RHesjedal, TSchaadt, DThe magnetic microstructure of single-crystalline MnAs films on GaAs(001) has been investigated. Magnetic force microscopy (MFM) reveals a three-dimensional magnetization pattern that is in disagreement with the simple domain picture observed by surface-sensitive magnetic imaging. Here, we present a consistent micromagnetic picture of MnAs thin films in the ferromagnetic stripe phase, which appears in the course of the phase transition. A number of equilibrium magnetization patterns of the stripes are found that are, in fact, based on flux-closure domain patterns in the basal plane of MnAs. The simulation of a stripe array yields excellent agreement with the measured surface magnetization. The experimentally observed stray field contrast was confirmed by MFM contrast simulations based on these equilibrium magnetization patterns. © 2007 American Institute of Physics. |
| spellingShingle | Engel-Herbert, R Hesjedal, T Schaadt, D Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title | Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title_full | Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title_fullStr | Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title_full_unstemmed | Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title_short | Three-dimensional magnetic flux-closure domain patterns in MnAs thin films on GaAs(001) |
| title_sort | three dimensional magnetic flux closure domain patterns in mnas thin films on gaas 001 |
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