Probing the morphology of epitaxial Fe/MgO discontinuous multilayers by magnetometric technique

Vovk, A. ; García-García, A. ; Pogorelov, Y.G. ; Pardo, J.A. (Universidad de Zaragoza) ; Štrichovanec, P. ; Magén, C. (Universidad de Zaragoza) ; Algarabel, P.A. (Universidad de Zaragoza) ; Araujo, J.P. ; Kakazei, G.N.

Resumen: Discontinuous metal-insulator multilayers (DMIMs) are a special type of nanostructures with a layered arrangement of metallic particles sandwiched between continuous insulating layers. DMIMs exhibit moderate tunneling magnetoresistance (TMR) ratio but enhanced low-field sensitivity, which makes them promising candidates for magnetic field sensors. Recently we have grown epitaxial Fe/MgO DMIMs on MgO (0 0 1) single crystal substrates at different deposition conditions. Here, based on the analysis of magnetic isotherms in a broad temperature range, the effect of deposition temperature (TS) on microstructure of DMIMs is being studied and compared with the results of Transmission Electron Microscopy. It is shown that metallic layers consist of flat nanoparticles whose average size decreases, and their crystallinity improves with the increase of TS.

Idioma: Inglés

DOI: 10.1016/j.jmmm.2018.11.015

Año: 2019

Publicado en: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 474 (2019), 369-373
ISSN: 0304-8853

Factor impacto JCR: 2.717 (2019)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 30 / 69 = 0.435 (2019) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 149 / 314 = 0.475 (2019) - Q2 - T2

Factor impacto SCIMAGO: 0.658 - Electronic, Optical and Magnetic Materials (Q2) - Condensed Matter Physics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E26
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)