Static and dynamic properties of [hkl] low-symmetry trilayers

We present a theoretical study about the influence of magneto‐crystalline anisotropies on the static and dynamic magnetic properties of trilayers coupled via bilinear and biquadratic exchange fields for situations in which the systems are grown in unusual [hkl ] low‐symmetry directions. We apply a r...

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Principais autores:	Celino, K. R., Costa, C. H., Bezerra, Claudionor Gomes, Feitosa, Carlos Chesman de Araújo
Formato:	article
Idioma:	English
Publicado em:	Wiley
Assuntos:	Magnetic anisotropy Magnetic interlayer coupling Magnetization Phenomenological modeling Symmetry
Endereço do item:	https://repositorio.ufrn.br/jspui/handle/123456789/29424
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spelling	ri-123456789-294242022-05-20T18:32:46Z Static and dynamic properties of [hkl] low-symmetry trilayers Celino, K. R. Costa, C. H. Bezerra, Claudionor Gomes Feitosa, Carlos Chesman de Araújo Magnetic anisotropy Magnetic interlayer coupling Magnetization Phenomenological modeling Symmetry We present a theoretical study about the influence of magneto‐crystalline anisotropies on the static and dynamic magnetic properties of trilayers coupled via bilinear and biquadratic exchange fields for situations in which the systems are grown in unusual [hkl ] low‐symmetry directions. We apply a realistic phenomenological model, with a total free magnetic energy that includes Zeeman interaction and magneto‐crystalline anisotropies as well as exchange energy terms. We consider parameters from the literature to illustrate our results for Fe/Cr/Fe systems. In particular, a total of six different magnetic scenarios for the [211] and [321] low‐symmetry growth orientations and three sets of exchange fields were analyzed, and the associated magnetization, magnetoresistance, and spin‐wave frequencies were calculated. Our results show that the combination of magneto‐crystalline symmetries and exchange fields leads to various interesting properties, including different values of the saturation field for the magnetization and magnetoresistance curves. Regarding the spin‐wave modes, we observed the presence of Goldstone modes, associated with second‐order phase transitions, resulting from the competition between the Zeeman and biquadratic energies 2020-07-03T13:40:27Z 2020-07-03T13:40:27Z 2016-01-28 article CELINO, K. R.; COSTA, C. H.; BEZERRA, C. G. ; CHESMAN, C.. Static and dynamic properties of [ hkl ] low-symmetry trilayers. Physica status solidi (b), v. 5, p. n/a-n/a, 2016. Disponível em: https://onlinelibrary.wiley.com/doi/abs/10.1002/pssb.201552597. Acesso em: 24 maio 2020. https://doi.org/10.1002/pssb.201552597. https://repositorio.ufrn.br/jspui/handle/123456789/29424 10.1002/pssb.201552597 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ Wiley
institution	Repositório Institucional
collection	RI - UFRN
language	English
topic	Magnetic anisotropy Magnetic interlayer coupling Magnetization Phenomenological modeling Symmetry
spellingShingle	Magnetic anisotropy Magnetic interlayer coupling Magnetization Phenomenological modeling Symmetry Celino, K. R. Costa, C. H. Bezerra, Claudionor Gomes Feitosa, Carlos Chesman de Araújo Static and dynamic properties of [hkl] low-symmetry trilayers
description	We present a theoretical study about the influence of magneto‐crystalline anisotropies on the static and dynamic magnetic properties of trilayers coupled via bilinear and biquadratic exchange fields for situations in which the systems are grown in unusual [hkl ] low‐symmetry directions. We apply a realistic phenomenological model, with a total free magnetic energy that includes Zeeman interaction and magneto‐crystalline anisotropies as well as exchange energy terms. We consider parameters from the literature to illustrate our results for Fe/Cr/Fe systems. In particular, a total of six different magnetic scenarios for the [211] and [321] low‐symmetry growth orientations and three sets of exchange fields were analyzed, and the associated magnetization, magnetoresistance, and spin‐wave frequencies were calculated. Our results show that the combination of magneto‐crystalline symmetries and exchange fields leads to various interesting properties, including different values of the saturation field for the magnetization and magnetoresistance curves. Regarding the spin‐wave modes, we observed the presence of Goldstone modes, associated with second‐order phase transitions, resulting from the competition between the Zeeman and biquadratic energies
format	article
author	Celino, K. R. Costa, C. H. Bezerra, Claudionor Gomes Feitosa, Carlos Chesman de Araújo
author_facet	Celino, K. R. Costa, C. H. Bezerra, Claudionor Gomes Feitosa, Carlos Chesman de Araújo
author_sort	Celino, K. R.
title	Static and dynamic properties of [hkl] low-symmetry trilayers
title_short	Static and dynamic properties of [hkl] low-symmetry trilayers
title_full	Static and dynamic properties of [hkl] low-symmetry trilayers
title_fullStr	Static and dynamic properties of [hkl] low-symmetry trilayers
title_full_unstemmed	Static and dynamic properties of [hkl] low-symmetry trilayers
title_sort	static and dynamic properties of [hkl] low-symmetry trilayers
publisher	Wiley
publishDate	2020
url	https://repositorio.ufrn.br/jspui/handle/123456789/29424
work_keys_str_mv	AT celinokr staticanddynamicpropertiesofhkllowsymmetrytrilayers AT costach staticanddynamicpropertiesofhkllowsymmetrytrilayers AT bezerraclaudionorgomes staticanddynamicpropertiesofhkllowsymmetrytrilayers AT feitosacarloschesmandearaujo staticanddynamicpropertiesofhkllowsymmetrytrilayers
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Static and dynamic properties of [hkl] low-symmetry trilayers

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