Electromagnetic properties of NiZn ferrite nanoparticles and their polymer composites

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4873235· OSTI ID:22273454

Parsons, P. ^[1]; Duncan, K. ^[2]; Giri, A. K. ^[1]; Xiao, J. Q. ^[3]

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1. U.S. Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, Maryland 21005 (United States)
2. U.S. Army, Communications-Electronics Research, Development and Engineering Center, Space and Terrestrial Communications Directorate, Aberdeen Proving Ground, Maryland 21005 (United States)
3. Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)

The magnetic properties of polycrystalline NiZn ferrite nanoparticles synthesized using a polyol-reduction and coprecipitation reaction methods have been investigated. The effects on magnetization of synthesis approach, chemical composition, processing conditions, and on the size of nanoparticles on magnetization have been investigated. The measured room-temperature magnetization for the as-prepared magnetic nanoparticles (MNP) synthesized via polyol-reduction and coprecipitation is 69 Am{sup 2} kg{sup −1} and 14 Am{sup 2} kg{sup −1}, respectively. X-ray diffraction measurements confirm spinel structure of the particles with an estimated grain size of ∼80 nm obtained from the polyol-reduction and 28 nm obtained from these coprecipitation techniques. Upon calcination under atmospheric conditions at different temperatures between 800 °C and 1000 °C, the magnetization, M, of the coprecipitated MNP increases to 76 Am{sup 2} kg{sup −1} with an estimated grain size of 90 nm. The MNP-polymer nanocomposites made from the synthesized MNP in various loading fraction and high density polyethylene exhibit interesting electromagnetic properties. The measured permeability and permittivity of the magnetic nanoparticle-polymer nanocomposites increases with the loading fractions of the magnetic nanoparticles, suggesting control for impedance matching for antenna applications.

• OSTI ID: 22273454
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Other Information: (c) 2014 U.S. Government; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CALCINATION
COMPOSITE MATERIALS
COPRECIPITATION
FERRITE
GRAIN SIZE
IMPEDANCE
INTERMETALLIC COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
NANOSTRUCTURES
NICKEL
PARTICLES
PERMITTIVITY
POLYCRYSTALS
POLYETHYLENES
TEMPERATURE RANGE 0273-0400 K
X-RAY DIFFRACTION
ZINC