Tailoring functional properties of Ni nanoparticles-acrylic copolymer composites with different concentrations of magnetic filler / Kurlyandskaya G. V.,Safronov A. P.,Bhagat S. M.,Lofland S. E.,Beketov I. V.,Marcano Prieto L. // JOURNAL OF APPLIED PHYSICS. - 2015. - V. 117, l. 12.

ISSN/EISSN:

0021-8979 / 1089-7550

Type:

Article

Abstract:

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 mu m 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. (C)2015 AIP Publishing LLC.

Author keywords:

ELECTRIC EXPLOSION; NANOPOWDERS; WIRE

DOI:

10.1063/1.4916700

Web of Science ID:

ISI:000352315700023

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR 28
Publisher	AMER INST PHYSICS
Address	1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	123917
EISSN	1089-7550
Keywords-Plus	ELECTRIC EXPLOSION; NANOPOWDERS; WIRE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	galina@we.l.ehu.es
ORCID-Numbers	Kurlyandskaya, Galina/0000-0002-3712-1637 Lofland, Samuel/0000-0002-1024-5103
Funding-Acknowledgement	U.S. Civilian Research \& Development Foundation (CRDF Global) {[}CRDF-UB RAS RUE2-7103-EK-13]; United States Department of State
Funding-Text	This publication is based on work supported by a Grant No. CRDF-UB RAS RUE2-7103-EK-13 from the U.S. Civilian Research \& Development Foundation (CRDF Global) with funding from the United States Department of State. The opinions, findings, and conclusions stated herein are those of the author(s) and do not necessarily reflect those of CRDF Global or the United States Department of State. We thank K. Lodewijk, A. I. Medvedev, A. M. Murzakaev for special support. Selected measurements were made at SGIKER services of UPV-EHU.
Number-of-Cited-References	24
Usage-Count-Since-2013	15
Journal-ISO	J. Appl. Phys.
Doc-Delivery-Number	CF1OJ