Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy
We present a variable variance Preisach model that fully accounts for the different magnetization processes of a multilayer structure with perpendicular magnetic anisotropy by adjusting the evolution of the interaction variance as the magnetization changes. We successfully compare in a quantitative...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/110561 https://orcid.org/0000-0003-2262-1249 |
| _version_ | 1826196365388021760 |
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| author | Franco, A. F. Gonzalez-Fuentes, C. Morales, R. Dumas, R. Åkerman, J. Garcia, C. Ross, Caroline A |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Franco, A. F. Gonzalez-Fuentes, C. Morales, R. Dumas, R. Åkerman, J. Garcia, C. Ross, Caroline A |
| author_sort | Franco, A. F. |
| collection | MIT |
| description | We present a variable variance Preisach model that fully accounts for the different magnetization processes of a multilayer structure with perpendicular magnetic anisotropy by adjusting the evolution of the interaction variance as the magnetization changes. We successfully compare in a quantitative manner the results obtained with this model to experimental hysteresis loops of several [CoFeB/Pd]_{n} multilayers. The effect of the number of repetitions and the thicknesses of the CoFeB and Pd layers on the magnetization reversal of the multilayer structure is studied, and it is found that many of the observed phenomena can be attributed to an increase of the magnetostatic interactions and subsequent decrease of the size of the magnetic domains. Increasing the CoFeB thickness leads to the disappearance of the perpendicular anisotropy, and such a minimum thickness of the Pd layer is necessary to achieve an out-of-plane magnetization. |
| first_indexed | 2024-09-23T10:25:45Z |
| format | Article |
| id | mit-1721.1/110561 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:25:45Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1105612022-09-26T17:50:12Z Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy Franco, A. F. Gonzalez-Fuentes, C. Morales, R. Dumas, R. Åkerman, J. Garcia, C. Ross, Caroline A Massachusetts Institute of Technology. Department of Materials Science and Engineering Ross, Caroline A We present a variable variance Preisach model that fully accounts for the different magnetization processes of a multilayer structure with perpendicular magnetic anisotropy by adjusting the evolution of the interaction variance as the magnetization changes. We successfully compare in a quantitative manner the results obtained with this model to experimental hysteresis loops of several [CoFeB/Pd]_{n} multilayers. The effect of the number of repetitions and the thicknesses of the CoFeB and Pd layers on the magnetization reversal of the multilayer structure is studied, and it is found that many of the observed phenomena can be attributed to an increase of the magnetostatic interactions and subsequent decrease of the size of the magnetic domains. Increasing the CoFeB thickness leads to the disappearance of the perpendicular anisotropy, and such a minimum thickness of the Pd layer is necessary to achieve an out-of-plane magnetization. Knut and Alice Wallenberg Foundation Semiconductor Research Corporation. Center for Spintronic Materials, Interfaces, and Novel Architectures Microelectronics Advanced Research Corporation 2017-07-07T19:45:34Z 2017-07-07T19:45:34Z 2016-08 2016-06 2016-08-29T22:00:05Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/110561 Franco, A. F. et al. “Variable Variance Preisach Model for Multilayers with Perpendicular Magnetic Anisotropy.” Physical Review B 94.6 (2016): n. pag. © 2016 American Physical Society https://orcid.org/0000-0003-2262-1249 en http://dx.doi.org/10.1103/PhysRevB.94.064431 Physical Review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Franco, A. F. Gonzalez-Fuentes, C. Morales, R. Dumas, R. Åkerman, J. Garcia, C. Ross, Caroline A Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title | Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title_full | Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title_fullStr | Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title_full_unstemmed | Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title_short | Variable variance Preisach model for multilayers with perpendicular magnetic anisotropy |
| title_sort | variable variance preisach model for multilayers with perpendicular magnetic anisotropy |
| url | http://hdl.handle.net/1721.1/110561 https://orcid.org/0000-0003-2262-1249 |
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