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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Magnetic domain size tuning in asymmetric Pd/Co/W/Pd multilayers with perpendicular magnetic anisotropy

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Author(s):
Dugato, D. A. [1, 2] ; Brandao, J. [2] ; Seeger, R. L. [1] ; Beron, F. [3] ; Cezar, J. C. [2] ; Dorneles, L. S. [1] ; Mori, T. J. A. [2]
Total Authors: 7
Affiliation:
[1] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS - Brazil
[2] CNPEM, LNLS, BR-13083970 Campinas, SP - Brazil
[3] Univ Estadual Campinas UNICAMP, IFGW, BR-13083859 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Applied Physics Letters; v. 115, n. 18 OCT 28 2019.
Web of Science Citations: 0
Abstract

Magnetic multilayers presenting perpendicular magnetic anisotropy (PMA) have great potential for technological applications. On the path to develop further magnetic devices, one can adjust the physical properties of multilayered thin films by modifying their interfaces, thus determining the magnetic domain type, chirality, and size. Here, we demonstrate the tailoring of the domain pattern by tuning the perpendicular anisotropy, the saturation magnetization, and the interfacial Dzyaloshinskii-Moriya interaction (iDMI) in Pd/Co/Pd multilayers with the insertion of an ultrathin tungsten layer at the top interface. The average domain size decreases around 60% when a 0.2 nm thick W layer is added to the Co/Pd interface. Magnetic force microscopy images and micromagnetic simulations were contrasted to elucidate the mechanisms that determine the domain textures and sizes. Our results indicate that both iDMI and PMA can be tuned by carefully changing the interfaces of originally symmetric multilayers, leading to magnetic domain patterns promising for high density magnetic memories. (AU)

FAPESP's process: 17/10581-1 - Emergent phenomena in reduced dimension systems
Grantee:Pascoal Jose Giglio Pagliuso
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/51198-2 - Growth and characterization of the electronic structure of oxides multiferroics heterostructures
Grantee:Júlio Criginski Cezar
Support type: Research Grants - Young Investigators Grants