Tailoring functional properties of Ni nanoparticles-acrylic copolymer composites with different concentrations of magnetic filler

TY - JOUR

T1 - Tailoring functional properties of Ni nanoparticles-acrylic copolymer composites with different concentrations of magnetic filler

AU - Kurlyandskaya, G. V.

AU - Safronov, A. P.

AU - Bhagat, S. M.

AU - Lofland, S. E.

AU - Beketov, I. V.

AU - Marcano Prieto, L.

N1 - Publisher Copyright: © 2015 AIP Publishing LLC.

PY - 2015/3/28

Y1 - 2015/3/28

N2 - Magnetic composites with nickel nanoparticles synthesized by the method of the electrical explosion of wire were prepared with acrylic copolymer containing 95 wt. % of butylacrylate and 5 wt. % of methacrylic acid. Two series of composites were made with Ni content covering the range from 5 to 90 wt. % and differing in the degree of aggregation. In one series of composites, the aggregates were irregularly shaped globules with dimensions varying in 1-40 μm range. In the other, chain-like fragments were observed. As expected, the saturation magnetization value of the composites showed a linear dependence on concentration but the coercive field was slightly higher for the aggregated case for a given concentration. Microwave absorption studies of the composites showed both strong zero field absorption and ferromagnetic resonance (FMR). The FMR results were different for the two types of samples; however, each set can be explained by taking into account the distribution of local magnetic fields due to random positions of the particles.

AB - Magnetic composites with nickel nanoparticles synthesized by the method of the electrical explosion of wire were prepared with acrylic copolymer containing 95 wt. % of butylacrylate and 5 wt. % of methacrylic acid. Two series of composites were made with Ni content covering the range from 5 to 90 wt. % and differing in the degree of aggregation. In one series of composites, the aggregates were irregularly shaped globules with dimensions varying in 1-40 μm range. In the other, chain-like fragments were observed. As expected, the saturation magnetization value of the composites showed a linear dependence on concentration but the coercive field was slightly higher for the aggregated case for a given concentration. Microwave absorption studies of the composites showed both strong zero field absorption and ferromagnetic resonance (FMR). The FMR results were different for the two types of samples; however, each set can be explained by taking into account the distribution of local magnetic fields due to random positions of the particles.

UR - https://www.scopus.com/pages/publications/84926374197

UR - https://www.scopus.com/pages/publications/84926374197#tab=citedBy

U2 - 10.1063/1.4916700

DO - 10.1063/1.4916700

M3 - Article

SN - 0021-8979

VL - 117

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 12

M1 - 123917

ER -