Effect of the strong coupling on the exchange bias field in IrMn/Py/Ru/Co spin valves Tarazona H.S. es_PE Alayo W. es_PE Landauro C.V. es_PE Quispe-Marcatoma J. es_PE 2024-05-30T23:13:38Z 2024-05-30T23:13:38Z 2018
dc.description This work has been partially supported by the Brazilian agencies CNPq and CAPES. H.S.T. thanks to the Peruvian Doctoral Scholarship of CIENCIACTIVA (CONCYTEC) under Grant #218-2014-FONDECYT. C.V.L. and J.Q-M are grateful to CIENCIACTIVA (CONCYTEC) for financial support throught the Excellence Center Programs. We also acknowledge E.B. Saitovitch and CBPF for experimental facilities.
dc.description.abstract The IrMn/Py/Ru/Co (Py = Ni81Fe19) spin valves have been produced by sputtering deposition and analyzed by magnetization measurements and a theoretical modelling of their exchange interactions, based on the macro-spin model. The Ru thickness was grown between 6 and 22 Å, which is small enough to promote strong indirect coupling between Py and Co. Results of measurements showed a large and gradual change in the shape of hysteresis loops when the Ru thickness was varied. The theoretical analysis, using numerical calculations based on the gradient conjugate method, provides the exchange coupling constants (bilinear and biquadratic), the exchange anisotropy fields and the magnetic anisotropy fields (uniaxial and rotatable). The exchange bias fields of spin valves were compared to that of a IrMn/Py bilayer. We found that the difference between these fields oscillates with Ru thickness in the same manner as the bilinear coupling constants.
dc.description.sponsorship Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica - Concytec
dc.identifier.scopus 2-s2.0-85028995952
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Journal of Magnetism and Magnetic Materials
dc.rights info:eu-repo/semantics/openAccess
dc.subject Theoretical modelling
dc.subject Anisotropy es_PE
dc.subject Binary alloys es_PE
dc.subject Conjugate gradient method es_PE
dc.subject Exchange coupling es_PE
dc.subject Ferrimagnetic materials es_PE
dc.subject Iridium alloys es_PE
dc.subject Iron alloys es_PE
dc.subject Magnetic anisotropy es_PE
dc.subject Magnetic devices es_PE
dc.subject Magnetic materials es_PE
dc.subject Magnetoresistance es_PE
dc.subject Manganese alloys es_PE
dc.subject Nickel alloys es_PE
dc.subject Numerical methods es_PE
dc.subject Exchange coupling constants es_PE
dc.subject Exchange-bias fields es_PE
dc.subject Magnetic anisotropy field es_PE
dc.subject Magnetization measurements es_PE
dc.subject Numerical calculation es_PE
dc.subject Spin valve es_PE
dc.subject Sputtering deposition es_PE
dc.subject Cobalt alloys es_PE
dc.title Effect of the strong coupling on the exchange bias field in IrMn/Py/Ru/Co spin valves
dc.type info:eu-repo/semantics/article