Co/Au multisegmented nanowires: a 3D array of magnetostatically coupled nanopillars

Arrays of multisegmented Co/Au nanowires with designed segment lengths and diameters have been prepared by electrodeposition into aluminum oxide templates. The high quality of the Co/Au interface and the crystallographic structure of Co segments have determined by high-resolution transmission electr...

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Bibliographic Details
Published in:Nanotechnology 2017-03, Vol.28 (9), p.095709-095709
Main Authors: Bran, C, Ivanov, Yu P, Kosel, J, Chubykalo-Fesenko, O, Vazquez, M
Format: Article
Language:English
Subjects:
crystallographic structure
magnetization reversal
micromagnetic simulations
multisegmented nanowires
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Summary:Arrays of multisegmented Co/Au nanowires with designed segment lengths and diameters have been prepared by electrodeposition into aluminum oxide templates. The high quality of the Co/Au interface and the crystallographic structure of Co segments have determined by high-resolution transmission electron microscopy. Magnetic hysteresis loop measurements show larger coercivity and squareness of multisegmented nanowires as compared to single segment Co nanowires. The complementary micromagnetic simulations are in good agreement with the experimental results, confirming that the magnetic behavior is defined mainly by magnetostatic coupling between different segments. The proposed structure constitutes an innovative route towards a 3D array of synchronized magnetic nano-oscillators with large potential in nanoelectronics.
ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/aa585f