Document Type
Thesis - Open Access
Award Date
2018
Degree Name
Master of Science (MS)
Department / School
Mechanical Engineering
First Advisor
Zong Hu
Keywords
Ferrite magnetic nanoparticles, Finite element analysis, Magnetic and Dielectric properties, Microwave, Nanocomposites, Radiation absorbent
Abstract
The purpose of this study is to simulate and synthesize a Radar (or Radiation) Absorbent Material (RAM) by using polymers and nickel zinc ferrite (Ni0.5Zn0.5Fe2O4) magnetic nanoparticles. There is an ardent desire in military, space and electronics for lighter, faster, cheaper and widespread bandwidth providing RAM materials. Electromagnetic property such as magnetic permeability and electric permittivity play a major in controlling the radiation. The appropriate combination of permeability and permittivity properties is acquired for the synthesis of RAM providing wide-ranging bandwidth. The apt property is achieved by rule of mixture, mixing of particular composition of epoxy polymer having low permeability and permittivity with the nickel zinc ferrite magnetic nanoparticle having high permeability and permittivity. In this investigation, we studied the effective relative permeability and permittivity of Ni0.5Zn0.5Fe2O4 nanoparticles encapsulated within the epoxy polymer resin through Finite Element Analysis (FEA) and several various analytical experiments to verify and match both the simulation and experimental results. The FEA model was explored in two different aspect. First, shape of the nanoparticle is assumed to be spherical, cubic and bar structure. Secondly, the distribution of nanoparticle in the epoxy polymer matrix is assumed to be Simple Cubic (SC), Body Center Cubic (BCC), Face Center Cubic (FCC) and Random distributed unit cell. The result is compared with analytic approaches (Maxwell-Garnett (M-G) theory, Bruggeman theory) and Vibrating Sample Magnetometer (VSM) experimental data.
Library of Congress Subject Headings
Composite materials.
Nanoparticles.
Magnetic structure.
Finite element method.
Description
Includes bibliographical references (pages 76-78)
Format
application/pdf
Number of Pages
88
Publisher
South Dakota State University
Recommended Citation
Kanagaraj, Jaiprakash, "Electro-magnetic Responsive Ni0.5Zn0.5Fe2O4 Nano-particle Composite" (2018). Electronic Theses and Dissertations. 2428.
https://openprairie.sdstate.edu/etd/2428
Included in
Electromagnetics and Photonics Commons, Materials Science and Engineering Commons, Nanotechnology Fabrication Commons
Rights Statement
