The influence of the synthesis conditions on the magnetic behaviour of the densely packed arrays of Ni nanowires in porous anodic alumina membranes
Vorobjova A. Tishkevich D. Shimanovich D. Zubar T. Astapovich K. Kozlovskiy A. Zdorovets M. Zhaludkevich A. Lyakhov D. Michels D. Vinnik D. Fedosyuk V. Trukhanov A.
21 January 2021Royal Society of Chemistry
RSC Advances
2021#11Issue 73952 - 3962 pp.
The densely packed arrays of Ni nanowires of 70 nm diameter and 6-12 μm length were obtained via electrodeposition into porous alumina membranes (PAAMs) of 55-75 μm thickness. The morphology, microstructure and magnetic properties between the room and liquid-helium temperature of Ni nanowires in PAAMs have been investigated using scanning electron microscopy, X-ray diffraction and vibrating sample magnetometry. The crystal structure of the Ni nanowires is fcc with (220) preferred orientation. The magnetic characteristics of the Ni nanowires in PAAMs were compared with the same characteristics of bulk Ni and with other researchers data. The effect of the porous alumina membrane and the Ni nanowires synthesis conditions on the magnetic characteristics of Ni nanowire arrays has been studied. The coercivity reached more than 750 kOe and the squareness ratio up to 0.65 under the proposed optimal synthesis conditions for Ni nanowires. Magnetic parameters of the densely packed arrays of Ni nanowires allow using them in magnetic recording media, hard disk drives, storage systems and sensors. In addition, such structures are of considerable interest for basic research on nanomagnetism which is significantly different from the magnetic properties of bulk and thin films materials.
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Department of Micro- and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, Minsk, 220013, Belarus
Laboratory of Magnetic Films Physics, Laboratory of High Pressure Physics and Superhard Materials, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, Minsk, 220072, Belarus
Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk, 454080, Russian Federation
Engineering Profile Laboratory, L. N. Gumilyov Eurasian National University, Nur-Sultan, 010008, Kazakhstan
Laboratory of Solid State Physics, Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Department of Intelligent Information Technologies, Ural Federal University Named after the First President of Russia B. N. Yeltsin, Yekaterinburg, 620075, Russian Federation
Computer Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
Department of Micro- and Nanoelectronics
Laboratory of Magnetic Films Physics
Laboratory of Single Crystal Growth
Engineering Profile Laboratory
Laboratory of Solid State Physics
Department of Intelligent Information Technologies
Computer Electrical and Mathematical Science and Engineering Division
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