Magnetic properties of the densely packed ultra-long Ni nanowires encapsulated in alumina membrane
Tishkevich D. Vorobjova A. Shimanovich D. Kaniukov E. Kozlovskiy A. Zdorovets M. Vinnik D. Turutin A. Kubasov I. Kislyuk A. Dong M. Sayyed M.I. Zubar T. Trukhanov A.
July 2021MDPI AG
Nanomaterials
2021#11Issue 7
High-quality and compact arrays of Ni nanowires with a high ratio (up to 700) were obtained by DC electrochemical deposition into porous anodic alumina membranes with a distance between pores equal to 105 nm. The nanowire arrays were examined using scanning electron microscopy, X-ray diffraction analysis and vibration magnetometry at 300 K and 4.2 K. Microscopic and X-ray diffraction results showed that Ni nanowires are homogeneous, with smooth walls and mostly single-crystalline materials with a 220-oriented growth direction. The magnetic properties of the samples (coercivity and squareness) depend more on the length of the nanowires and the packing factor (the volume fraction of the nanowires in the membrane). It is shown that the dipolar interaction changes the demagnetizing field during a reversal magnetization of the Ni nanowires, and the general effective field of magnetostatic uniaxial shape anisotropy. The effect of magnetostatic interaction between ultra-long nanowires (with an aspect ratio of >500) in samples with a packing factor of ≥37% leads to a reversal magnetization state, in which a “curling”-type model of nanowire behavior is realized.
Anodizing , Elec-trodeposition , Magnetic anisotropy , Magnetic properties , Nanowire arrays , Nickel , Porous anodic alumina , Template synthesis
Text of the article Перейти на текст статьи
Laboratory of Magnetic Films Physics, 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
Department of Micro and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, Minsk, 220013, Belarus
Department of Technology of Electronic Materials, Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology, «MISIS», Moscow, 119049, Russian Federation
Engineering Profile Laboratory, L.N. Gumilyov, Eurasian National University, Nur-Sultan, 010000, 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
Department of Physics and I3N, University of Aveiro, Aveiro, 3810-193, Portugal
Department of Resource and Environment, Northeastern University, Shenyang, 110819, China
Department of Physics, Faculty of Science, Isra University, Amman, 11622, Jordan
Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman bin Faisal University (IAU), Dammam, 31441, Saudi Arabia
Laboratory of Magnetic Films Physics
Laboratory of Single Crystal Growth
Department of Micro and Nanoelectronics
Department of Technology of Electronic Materials
Engineering Profile Laboratory
Laboratory of Solid State Physics
Department of Intelligent Information Technologies
Department of Physics and I3N
Department of Resource and Environment
Department of Physics
Department of Nuclear Medicine Research
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026