RT Journal Article
T1 Local control of perpendicular magnetic anisotropy of Pd/Co multilayers via ion bombardment
A1 Sebastiani Tofano, Eugenia
A1 Parente Campos, Ana
A1 Alcázar Ruano, Pedro Luis
A1 Abuín, Manuel
A1 González García, Álvaro Antonio
A1 López Sánchez, Jesús
A1 Rubio Zuazo, Juan
A1 Manso Silván, Miguel
A1 Mascaraque Susunaga, Arantzazu
A1 González Barrio, Miguel Ángel
A1 Menghini, Mariela
A1 Schuller, Ivan K.
A1 Basaran, Ali C.
A1 González Herrera, Elvira María
A1 Rodríguez De La Fuente, Óscar
A1 Muñoz Noval, Álvaro
AB In this work, we have controlled locally the magnetic anisotropy of PdCo multilayers using ion beam modification. First, we have used techniques with different probing depths to confirm that cobalt is partially oxidized in the Pd/Co multilayers exhibiting PMA fabricated by sputtering, presumably due to the diffusion of atmospheric oxygen migrated through the Pd capping layer. Then, low energy ion bombardment has been employed to induce a structural disorder in the upper layers of the multilayer, gradually reducing the PMA at local scale with increasing ion doses. Medium ion doses lead to a marked decline in PMA, resulting in equivalent magnetic anisotropy directions and the loss of characteristic labyrinthine magnetic domain morphology. High ion doses completely suppress PMA, yielding a typical in-plane shape anisotropy. By combining controlled PMA reduction via lithographic techniques, we create elongated structures displaying distinct magnetic responses; bombarded regions exhibit reduced PMA, whereas adjacent regions maintain their PMA. Notably, regions with reduced PMA do not disrupt the distribution of perpendicular magnetic domains in neighboring PMA regions, even at widths as narrow as 500 nm, demonstrating the robustness of the PMA domain structure.
PB Elsevier
SN 0304-8853
YR 2025
FD 2025-10
LK https://hdl.handle.net/20.500.14352/124487
UL https://hdl.handle.net/20.500.14352/124487
LA eng
NO E. Sebastiani-Tofano, A. Parente, P.L. Alcázar Ruano, M. Abuín, Á. González-García, J. López-Sánchez, J. Rubio-Zuazo, M.M. Silván, A. Mascaraque, M.Á. González Barrio, M. Menghini, I.K. Schuller, A. C. Basaran, E.M. González, O. Rodríguez De La Fuente, Á. Muñoz-Noval, Local control of perpendicular magnetic anisotropy of Pd/Co multilayers via ion bombardment, Journal of Magnetism and Magnetic Materials 630 (2025) 173469. https://doi.org/10.1016/j.jmmm.2025.173469.
NO PRX21/00740 (Salvador de Madariaga program)2018-T1/IND-10360 2010 6O E 0132021 60 E 030CEX2024-001445-SRYC2022-035912-ICT82/20-CT83/20CEX2020-001039-S
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación (España)
NO European Commission
NO Comunidad de Madrid
NO Consejo Superior de Investigaciones Científicas (España)
NO Banco Santander
NO Universidad Complutense de Madrid
NO Department of Energy (US)
DS Docta Complutense
RD 19 mar 2026