131175 20240206154529.0 doi 10.1016/j.jmmm.2019.166135 sideral 115711 ART-2020-115711 eng Begué, A. (orcid)0000-0002-2642-5635 Magnetic ripple domain structure in FeGa/MgO thin films 2020 The magnetic domain structure is studied in epitaxial /MgO(0 0 1) films with 0 < x < 30 and thicknesses below 60 nm by magnetic force microscopy. For low gallium content, domains with the magnetization lying in the film plane and domain walls separating micrometric areas are observed. Above x ≈ 20, the magnetic contrast shows a fine corrugation, ranging from 300 to 900 nm, suggesting a ripple substructure with a periodic oscillation of the magnetization. We discuss the presence of a random magnetic anisotropy contribution, that superimposed to the cubic coherent anisotropy, is able to break the uniform orientation of the magnetization. The origin of that random anisotropy is attributed to several factors: coexistence of crystal phases in the films, inhomogeneous distribution of both internal strain and Ga–Ga next nearest neighbor pairs and interface magnetic anisotropy due to the Fe–O bond. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E10-17D info:eu-repo/grantAgreement/ES/MICINN/MAT2015-66726-R info:eu-repo/grantAgreement/ES/MINECO/BES-2016-076482 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.993 2020 PHYSICS, CONDENSED MATTER 33 / 69 = 0.478 2020 Q2 T2 MATERIALS SCIENCE, MULTIDISCIPLINARY 188 / 333 = 0.565 2020 Q3 T2 0.665 2020 Electronic, Optical and Magnetic Materials 2020 Q2 Condensed Matter Physics 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Proietti, M.G. Universidad de Zaragoza (orcid)0000-0003-4079-2658 Arnaudas, J.I. Universidad de Zaragoza (orcid)0000-0002-2624-6004 Ciria, M. Universidad de Zaragoza (orcid)0000-0003-1930-1455 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 498 (2020), 166135 [7 pp.] J. magn. magn. mater. Journal of Magnetism and Magnetic Materials 0304-8853 1067971 http://zaguan.unizar.es/record/131175/files/texto_completo.pdf Postprint 1051047 http://zaguan.unizar.es/record/131175/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:131175 articulos driver 2024-02-06-14:46:38 ARTICLE