Polyacrylamide ferrogels with Ni nanowires

Alexander P. Safronov, Bethanie J Stadler, Joseph Um, Mohammad Reza Zamani Kouhpanji, Javier Alonso Masa, Andrey G. Galyas, Galina V. Kurlyandskaya

Research output: Contribution to journalArticle

Abstract

Nickel magnetic nanowires (NWs) have attracted significant attention due to their unique properties, which are useful for basic studies and technological applications, for example in biomedicine. Their structure and magnetic properties were systematically studied in the recent years. In this work, Ni NWs with high aspect ratios (length/diameter ~250) were fabricated by electrodeposition into commercial anodic aluminum oxide templates. The templates were then etched and the NWs were suspended in water, where their hydrodynamic size was evaluated by dynamic light scattering. The magnetic response of these NWs as a function of an external magnetic field indicates a dominant shape anisotropy with propagation of the vortex domain wall as the main magnetization reversal process. The suspension of Ni NWs was used in the synthesis of two types of polyacrylamide ferrogels (FGs) by free radical polymerization, with weight fractions of Ni NWs in FGs of 0.036% and 0.169%. The FGs were reasonably homogeneous. The magnetic response of these FGs (hysteresis loops) indicated that the NWs are randomly oriented inside the FG, and their magnetic response remains stable after embedding.

Original languageEnglish (US)
Article number2582
JournalMaterials
Volume12
Issue number16
DOIs
StatePublished - Aug 1 2019

Fingerprint

Polyacrylates
Nanowires
Magnetization reversal
Aluminum Oxide
Domain walls
Dynamic light scattering
Hysteresis loops
Free radical polymerization
polyacrylamide
Nickel
Electrodeposition
Aspect ratio
Magnetic properties
Suspensions
Vortex flow
Anisotropy
Hydrodynamics
Magnetic fields
Aluminum
Oxides

Keywords

  • Electrochemical deposition
  • Ferrogels
  • Nanomagnetism
  • Nickel nanowires

PubMed: MeSH publication types

  • Journal Article

Cite this

Safronov, A. P., Stadler, B. J., Um, J., Kouhpanji, M. R. Z., Masa, J. A., Galyas, A. G., & Kurlyandskaya, G. V. (2019). Polyacrylamide ferrogels with Ni nanowires. Materials, 12(16), [2582]. https://doi.org/10.3390/ma12162582

Polyacrylamide ferrogels with Ni nanowires. / Safronov, Alexander P.; Stadler, Bethanie J; Um, Joseph; Kouhpanji, Mohammad Reza Zamani; Masa, Javier Alonso; Galyas, Andrey G.; Kurlyandskaya, Galina V.

In: Materials, Vol. 12, No. 16, 2582, 01.08.2019.

Research output: Contribution to journalArticle

Safronov, AP, Stadler, BJ, Um, J, Kouhpanji, MRZ, Masa, JA, Galyas, AG & Kurlyandskaya, GV 2019, 'Polyacrylamide ferrogels with Ni nanowires', Materials, vol. 12, no. 16, 2582. https://doi.org/10.3390/ma12162582
Safronov AP, Stadler BJ, Um J, Kouhpanji MRZ, Masa JA, Galyas AG et al. Polyacrylamide ferrogels with Ni nanowires. Materials. 2019 Aug 1;12(16). 2582. https://doi.org/10.3390/ma12162582
Safronov, Alexander P. ; Stadler, Bethanie J ; Um, Joseph ; Kouhpanji, Mohammad Reza Zamani ; Masa, Javier Alonso ; Galyas, Andrey G. ; Kurlyandskaya, Galina V. / Polyacrylamide ferrogels with Ni nanowires. In: Materials. 2019 ; Vol. 12, No. 16.
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