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

• Type: Article in International Scientific Journal
• Date: 2019-03-15

Authors

G.N. Kakazei (Author) FCUP; A. Vovk (Author) FCUP; Y.G. Pogorelov (Author) FCUP; J.P. Araujo (Author) FCUP

Journal

Title: Journal of Magnetism and Magnetic Materials

Vol. 474

Pages: 369-373

ISSN: 0304-8853

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00P-X0W

DOI: 10.1016/j.jmmm.2018.11.015

Abstract (EN): 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 (T-S) 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 T-S.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5