Thermal hysteresis of ferromagnetic/antiferromagnetic compensated bilayers

Nascimento, F. I. F.; Dantas, Ana L.; Oliveira, L. L.; Mello, V. D.; Camley, R. E.; Carriço, Artur da Silva

Thermal hysteresis of ferromagnetic/antiferromagnetic compensated bilayers

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dc.contributor.author	Nascimento, F. I. F.
dc.contributor.author	Dantas, Ana L.
dc.contributor.author	Oliveira, L. L.
dc.contributor.author	Mello, V. D.
dc.contributor.author	Camley, R. E.
dc.contributor.author	Carriço, Artur da Silva
dc.date.accessioned	2020-04-20T11:48:52Z
dc.date.available	2020-04-20T11:48:52Z
dc.date.issued	2009-10-12
dc.description.resumo	We report a theoretical investigation of thermal hysteresis of fourfold anisotropy ferromagnetic FM film exchange coupled to a compensated antiferromagnetic substrate. Thermal hysteresis occurs if the temperature interval includes the reorientation transition temperature, below which the frustration of the interface exchange coupling leads to a 90° rotation of the magnetization of the ferromagnetic layer. The temperature width of the thermal hysteresis is tunable by external magnetic fields of modest magnitude, with values of 43 K for an external field of 110 Oe and of 14 K for a field of 210 Oe, for a Fe 12 nm/MnF2 110 bilayer. For a Fe 3 nm/FeF2 110 bilayer the width of the thermal hysteresis is 23 K at 110 Oe and 13 K at 300 Oe. We discuss how the thickness of the iron film affects the field tuning of the thermal hysteresis width, and also how the thermal loops may be used to identify the nature of the interface exchange energy.	pt_BR
dc.identifier.citation	NASCIMENTO, F. I. F.; DANTAS, Ana L.; OLIVEIRA, L. L.; MELLO, V. D.; CAMLEY, R. E.; CARRIÇO, A. S. Thermal hysteresis of ferromagnetic/antiferromagnetic compensated bilayers. Physical Review. B, Condensed Matter and Materials Physics, v. 80, p. 144407, 2009. ISSN 1550-235 versão online. DOI https://doi.org/10.1103/PhysRevB.80.144407. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.80.144407 . Acesso em: 20 abr. 2020	pt_BR
dc.identifier.doi	https://doi.org/10.1103/PhysRevB.80.144407
dc.identifier.issn	1098-0121 (print), 1550-235X (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/28816
dc.language	en	pt_BR
dc.publisher	Physical review B	pt_BR
dc.subject	Thermal hysteresis of ferromagnetic	pt_BR
dc.subject	Thermal hysteresis of antiferromagnetic	pt_BR
dc.subject	Compensated bilayers	pt_BR
dc.title	Thermal hysteresis of ferromagnetic/antiferromagnetic compensated bilayers	pt_BR
dc.type	article	pt_BR