The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers

Abstract The demagnetization progress of various hard/soft multilayers with perpendicular crystalline anisotropy has been studied by a micromagnetic model, incorporating the effect of the interface anisotropy, which is evident on the nucleation field when the soft layer thickness is small. Both micr...

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Autores principales:	Qian Zhao, Jun Chen, Jiaqi Wang, Xuefeng Zhang, Guoping Zhao, Qiang Ma
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/375b4c27a6ef48d7b92c33b134baa45c
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spelling	oai:doaj.org-article:375b4c27a6ef48d7b92c33b134baa45c2021-12-02T16:06:35ZThe effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers10.1038/s41598-017-03169-y2045-2322https://doaj.org/article/375b4c27a6ef48d7b92c33b134baa45c2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03169-yhttps://doaj.org/toc/2045-2322Abstract The demagnetization progress of various hard/soft multilayers with perpendicular crystalline anisotropy has been studied by a micromagnetic model, incorporating the effect of the interface anisotropy, which is evident on the nucleation field when the soft layer thickness is small. Both microscopic and macroscopic hysteresis loops as well as angular distributions for the magnetizations in the thickness direction have been calculated, taking into account of realistic values of the interface anisotropy. The formula for the nucleation field has been derived analytically, where the nucleation field increases linearly with the interface anisotropy for a wide thickness region. While the nucleation field could change by more than 90% due to the influence of the interface anisotropy, the interface anisotropy has no effect on the pinning field or the coercivity, but it has some slight influence on the angular distributions. On the other hand, positive interface anisotropy enhances the remanence and the energy products, whereas negative interface anisotropy deteriorates both of them. Comparison with the experimental data justifies our calculation, indicating that negative interface anisotropy should be avoided in the experiment.Qian ZhaoJun ChenJiaqi WangXuefeng ZhangGuoping ZhaoQiang MaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Qian Zhao Jun Chen Jiaqi Wang Xuefeng Zhang Guoping Zhao Qiang Ma The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
description	Abstract The demagnetization progress of various hard/soft multilayers with perpendicular crystalline anisotropy has been studied by a micromagnetic model, incorporating the effect of the interface anisotropy, which is evident on the nucleation field when the soft layer thickness is small. Both microscopic and macroscopic hysteresis loops as well as angular distributions for the magnetizations in the thickness direction have been calculated, taking into account of realistic values of the interface anisotropy. The formula for the nucleation field has been derived analytically, where the nucleation field increases linearly with the interface anisotropy for a wide thickness region. While the nucleation field could change by more than 90% due to the influence of the interface anisotropy, the interface anisotropy has no effect on the pinning field or the coercivity, but it has some slight influence on the angular distributions. On the other hand, positive interface anisotropy enhances the remanence and the energy products, whereas negative interface anisotropy deteriorates both of them. Comparison with the experimental data justifies our calculation, indicating that negative interface anisotropy should be avoided in the experiment.
format	article
author	Qian Zhao Jun Chen Jiaqi Wang Xuefeng Zhang Guoping Zhao Qiang Ma
author_facet	Qian Zhao Jun Chen Jiaqi Wang Xuefeng Zhang Guoping Zhao Qiang Ma
author_sort	Qian Zhao
title	The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
title_short	The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
title_full	The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
title_fullStr	The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
title_full_unstemmed	The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
title_sort	effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/375b4c27a6ef48d7b92c33b134baa45c
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The effect of interface anisotropy on demagnetization progress in perpendicularly oriented hard/soft exchange-coupled multilayers

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