Co/Au multisegmented nanowires: a 3D array of magnetostatically coupled nanopillars. (31st January 2017)

• Record Type: Journal Article
• Authors: Bran, C; Ivanov, Yu P; Kosel, J; Chubykalo-Fesenko, O; Vazquez, M
• Is Part Of: Nanotechnology. Volume 28:Number 9(2017)
• Publication Date: 2017-01-31
• Subjects: multisegmented nanowires -- crystallographic structure -- magnetization reversal -- micromagnetic simulations; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aa585f
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: 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.