Transverse susceptibility of nickel thin films with uniaxial anisotropy

Abstract A finite temperature Stoner–Wohlfarth model has been used to calculate the transverse susceptibility of an ensemble of ferromagnetic particles with distributed anisotropy. The simulated transverse susceptibility is in excellent agreement with data acquired from thin film samples of elementa...

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Autores principales:	Scott A. Mathews, Christopher Musi, Nicholas Charipar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dfa4599074dc4f5cad1f115d36438538
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spelling	oai:doaj.org-article:dfa4599074dc4f5cad1f115d364385382021-12-02T10:44:08ZTransverse susceptibility of nickel thin films with uniaxial anisotropy10.1038/s41598-021-82949-z2045-2322https://doaj.org/article/dfa4599074dc4f5cad1f115d364385382021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82949-zhttps://doaj.org/toc/2045-2322Abstract A finite temperature Stoner–Wohlfarth model has been used to calculate the transverse susceptibility of an ensemble of ferromagnetic particles with distributed anisotropy. The simulated transverse susceptibility is in excellent agreement with data acquired from thin film samples of elemental nickel, deposited on 128° Y-cut LiNb03. A strong, well-defined, uniaxial anisotropy is induced in the nickel film by low temperature annealing. Three peaks in the transverse susceptibility are observed in both the measured and simulated data when the applied field is misaligned with the hard axis by a few degrees. Two broad, reversible peaks occur when the applied field is equal to the anisotropy field. A single, sharp irreversible peak occurs when the absolute value of the applied field is less than the anisotropy field, and is associated with a metastable magnetic state. The irreversible peak disappears when the applied field is well aligned with the hard axis. The observed transverse susceptibility is consistent with the theoretical predictions of Aharoni et al. and is therefore consistent with the Stoner–Wohlfarth model.Scott A. MathewsChristopher MusiNicholas ChariparNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Scott A. Mathews Christopher Musi Nicholas Charipar Transverse susceptibility of nickel thin films with uniaxial anisotropy
description	Abstract A finite temperature Stoner–Wohlfarth model has been used to calculate the transverse susceptibility of an ensemble of ferromagnetic particles with distributed anisotropy. The simulated transverse susceptibility is in excellent agreement with data acquired from thin film samples of elemental nickel, deposited on 128° Y-cut LiNb03. A strong, well-defined, uniaxial anisotropy is induced in the nickel film by low temperature annealing. Three peaks in the transverse susceptibility are observed in both the measured and simulated data when the applied field is misaligned with the hard axis by a few degrees. Two broad, reversible peaks occur when the applied field is equal to the anisotropy field. A single, sharp irreversible peak occurs when the absolute value of the applied field is less than the anisotropy field, and is associated with a metastable magnetic state. The irreversible peak disappears when the applied field is well aligned with the hard axis. The observed transverse susceptibility is consistent with the theoretical predictions of Aharoni et al. and is therefore consistent with the Stoner–Wohlfarth model.
format	article
author	Scott A. Mathews Christopher Musi Nicholas Charipar
author_facet	Scott A. Mathews Christopher Musi Nicholas Charipar
author_sort	Scott A. Mathews
title	Transverse susceptibility of nickel thin films with uniaxial anisotropy
title_short	Transverse susceptibility of nickel thin films with uniaxial anisotropy
title_full	Transverse susceptibility of nickel thin films with uniaxial anisotropy
title_fullStr	Transverse susceptibility of nickel thin films with uniaxial anisotropy
title_full_unstemmed	Transverse susceptibility of nickel thin films with uniaxial anisotropy
title_sort	transverse susceptibility of nickel thin films with uniaxial anisotropy
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/dfa4599074dc4f5cad1f115d36438538
work_keys_str_mv	AT scottamathews transversesusceptibilityofnickelthinfilmswithuniaxialanisotropy AT christophermusi transversesusceptibilityofnickelthinfilmswithuniaxialanisotropy AT nicholascharipar transversesusceptibilityofnickelthinfilmswithuniaxialanisotropy
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Transverse susceptibility of nickel thin films with uniaxial anisotropy

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