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Title: Magnetic properties of cobalt-ferrite nanoparticles embedded in polystyrene resin

Abstract

Samples of maghemite and cobalt-ferrite nanoparticles (sizes, 3-10 nm) were prepared by cross-linking sulfonated polystyrene resin with aqueous solutions of (1) FeCl{sub 2}, (2) 80%FeCl{sub 2}+20%CoCl{sub 2}, (3) FeCl{sub 3}, and (4) 80%FeCl{sub 3}+20%CoCl{sub 2} by volume. Chemical analysis, x-ray powder-diffraction, and {sup 57}Fe Moessbauer spectroscopic measurements show that samples 1 and 3 consist of {gamma}-Fe{sub 2}O{sub 3} nanoparticles (sizes, {approx}10 and 3 nm) and sample 2 and 4 consist of Co{sub x}Fe{sub 3-x}O{sub 4} nanoparticles (sizes, {approx}10 and 4 nm). The temperature dependence of the zero-field-cooled and field-cooled magnetizations at low temperatures, together with a magnetic hysteresis in the M versus H data below blocking temperatures, demonstrate superparamagnetic behavior. The introduction of Co in the iron oxide-resin matrix results in an increase in the blocking temperature of nanoparticles.

Authors:
; ; ; ; ; ; ;  [1];  [2];  [2];  [2];  [2]
  1. Kettering University, Flint, Michigan 48504 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20788131
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 99; Journal Issue: 8; Other Information: DOI: 10.1063/1.2165922; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AQUEOUS SOLUTIONS; CHEMICAL ANALYSIS; COBALT CHLORIDES; CROSS-LINKING; FERRITE; HYSTERESIS; IRON 57; IRON CHLORIDES; IRON OXIDES; MAGNETIC PROPERTIES; MAGNETIZATION; MOESSBAUER EFFECT; NANOSTRUCTURES; PARTICLES; POLYSTYRENE; RESINS; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION

Citation Formats

Vaishnava, P. P., Senaratne, U., Buc, E., Naik, R., Naik, V. M., Tsoi, G., Wenger, L. E., Boolchand, P., Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, University of Michigan-Dearborn, Dearborn, Michigan 48128, University of Alabama, Birmingham, Alabama 35294, and Department of ECECS, University of Cincinnati, Ohio 45221. Magnetic properties of cobalt-ferrite nanoparticles embedded in polystyrene resin. United States: N. p., 2006. Web. doi:10.1063/1.2165922.
Vaishnava, P. P., Senaratne, U., Buc, E., Naik, R., Naik, V. M., Tsoi, G., Wenger, L. E., Boolchand, P., Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, University of Michigan-Dearborn, Dearborn, Michigan 48128, University of Alabama, Birmingham, Alabama 35294, & Department of ECECS, University of Cincinnati, Ohio 45221. Magnetic properties of cobalt-ferrite nanoparticles embedded in polystyrene resin. United States. doi:10.1063/1.2165922.
Vaishnava, P. P., Senaratne, U., Buc, E., Naik, R., Naik, V. M., Tsoi, G., Wenger, L. E., Boolchand, P., Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, University of Michigan-Dearborn, Dearborn, Michigan 48128, University of Alabama, Birmingham, Alabama 35294, and Department of ECECS, University of Cincinnati, Ohio 45221. Sat . "Magnetic properties of cobalt-ferrite nanoparticles embedded in polystyrene resin". United States. doi:10.1063/1.2165922.
@article{osti_20788131,
title = {Magnetic properties of cobalt-ferrite nanoparticles embedded in polystyrene resin},
author = {Vaishnava, P. P. and Senaratne, U. and Buc, E. and Naik, R. and Naik, V. M. and Tsoi, G. and Wenger, L. E. and Boolchand, P. and Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201 and University of Michigan-Dearborn, Dearborn, Michigan 48128 and University of Alabama, Birmingham, Alabama 35294 and Department of ECECS, University of Cincinnati, Ohio 45221},
abstractNote = {Samples of maghemite and cobalt-ferrite nanoparticles (sizes, 3-10 nm) were prepared by cross-linking sulfonated polystyrene resin with aqueous solutions of (1) FeCl{sub 2}, (2) 80%FeCl{sub 2}+20%CoCl{sub 2}, (3) FeCl{sub 3}, and (4) 80%FeCl{sub 3}+20%CoCl{sub 2} by volume. Chemical analysis, x-ray powder-diffraction, and {sup 57}Fe Moessbauer spectroscopic measurements show that samples 1 and 3 consist of {gamma}-Fe{sub 2}O{sub 3} nanoparticles (sizes, {approx}10 and 3 nm) and sample 2 and 4 consist of Co{sub x}Fe{sub 3-x}O{sub 4} nanoparticles (sizes, {approx}10 and 4 nm). The temperature dependence of the zero-field-cooled and field-cooled magnetizations at low temperatures, together with a magnetic hysteresis in the M versus H data below blocking temperatures, demonstrate superparamagnetic behavior. The introduction of Co in the iron oxide-resin matrix results in an increase in the blocking temperature of nanoparticles.},
doi = {10.1063/1.2165922},
journal = {Journal of Applied Physics},
number = 8,
volume = 99,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}
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