Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films
In this study, we investigated the changes in magnetic domain dynamics as a function of the thickness of the upper Pt and Cu layers in Pt/Co/Pt and Pt/Co/Cu structures using a magneto-optical Kerr microscope capable of real-time domain change observation. Interestingly enough, it was found that doma...
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AIP Publishing LLC
2025-04-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0251344 |
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| author | Tae-Song Kim See-Hun Yang Kwang-Su Ryu |
| author_facet | Tae-Song Kim See-Hun Yang Kwang-Su Ryu |
| author_sort | Tae-Song Kim |
| collection | DOAJ |
| description | In this study, we investigated the changes in magnetic domain dynamics as a function of the thickness of the upper Pt and Cu layers in Pt/Co/Pt and Pt/Co/Cu structures using a magneto-optical Kerr microscope capable of real-time domain change observation. Interestingly enough, it was found that domain reversal in all samples exhibited circular domain wall motion. In addition, the domain wall velocity as a function of the magnetic field was consistent with predictions based on a theoretical model assuming domain wall creep motion. The domain dynamics varied substantially with the upper layer’s thickness, depending on whether Pt or Cu was used. These variations were attributed to changes in magnetic anisotropy and microscopic pinning properties influenced by the type and thickness of the upper layer. |
| format | Article |
| id | doaj-art-e0aa2f4e352a4d7cab90a87a1ebb9438 |
| institution | OA Journals |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-e0aa2f4e352a4d7cab90a87a1ebb94382025-08-20T01:48:12ZengAIP Publishing LLCAIP Advances2158-32262025-04-01154045006045006-710.1063/5.0251344Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer filmsTae-Song Kim0See-Hun Yang1Kwang-Su Ryu2Department of Physics Education, Korea National University of Education, Cheongju, Chungbuk 28173, South KoreaIBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USADepartment of Physics Education, Korea National University of Education, Cheongju, Chungbuk 28173, South KoreaIn this study, we investigated the changes in magnetic domain dynamics as a function of the thickness of the upper Pt and Cu layers in Pt/Co/Pt and Pt/Co/Cu structures using a magneto-optical Kerr microscope capable of real-time domain change observation. Interestingly enough, it was found that domain reversal in all samples exhibited circular domain wall motion. In addition, the domain wall velocity as a function of the magnetic field was consistent with predictions based on a theoretical model assuming domain wall creep motion. The domain dynamics varied substantially with the upper layer’s thickness, depending on whether Pt or Cu was used. These variations were attributed to changes in magnetic anisotropy and microscopic pinning properties influenced by the type and thickness of the upper layer.http://dx.doi.org/10.1063/5.0251344 |
| spellingShingle | Tae-Song Kim See-Hun Yang Kwang-Su Ryu Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films AIP Advances |
| title | Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films |
| title_full | Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films |
| title_fullStr | Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films |
| title_full_unstemmed | Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films |
| title_short | Domain wall creep motions depending on the type and thickness of the upper layer in Co-based magnetic multilayer films |
| title_sort | domain wall creep motions depending on the type and thickness of the upper layer in co based magnetic multilayer films |
| url | http://dx.doi.org/10.1063/5.0251344 |
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