Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol

Heath Pardoe; Wanida Chua-anusorn; Timothy G. St. Pierre; Jon Dobson

doi:10.1016/S0304-8853(00)01226-9

Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol

Heath Pardoe, Wanida Chua-anusorn, Timothy G. St. Pierre, Jon Dobson

Research output: Contribution to journal › Article › Research › peer-review

314 Citations (Scopus)

Abstract

Magnetite/maghemite nanoparticles were synthesized in the presence of either dextran or polyvinyl alcohol, yielding cluster- and necklace-like aggregates, respectively. Magnetization, Mössbauer spectroscopy, and microscopy measurements indicate that the arrangement of the particles within the aggregates affects the magnetic properties of the particles resulting in smaller particles in the clusters having higher superparamagnetic blocking temperatures than larger particles in the necklaces.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	225
Issue number	1-2
DOIs	https://doi.org/10.1016/S0304-8853(00)01226-9
Publication status	Published - 3 May 2001
Externally published	Yes

Keywords

Dextran
Ferrofluids
Maghemite
Magnetic properties
Magnetite
Mössbauer spectroscopy
Nanoscale particles
Polyvinyl alcohol
Synthesis

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10.1016/S0304-8853(00)01226-9

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title = "Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol",

abstract = "Magnetite/maghemite nanoparticles were synthesized in the presence of either dextran or polyvinyl alcohol, yielding cluster- and necklace-like aggregates, respectively. Magnetization, M{\"o}ssbauer spectroscopy, and microscopy measurements indicate that the arrangement of the particles within the aggregates affects the magnetic properties of the particles resulting in smaller particles in the clusters having higher superparamagnetic blocking temperatures than larger particles in the necklaces.",

keywords = "Dextran, Ferrofluids, Maghemite, Magnetic properties, Magnetite, M{\"o}ssbauer spectroscopy, Nanoscale particles, Polyvinyl alcohol, Synthesis",

author = "Heath Pardoe and Wanida Chua-anusorn and {St. Pierre}, {Timothy G.} and Jon Dobson",

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T1 - Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol

AU - Pardoe, Heath

AU - Chua-anusorn, Wanida

AU - St. Pierre, Timothy G.

AU - Dobson, Jon

PY - 2001/5/3

Y1 - 2001/5/3

N2 - Magnetite/maghemite nanoparticles were synthesized in the presence of either dextran or polyvinyl alcohol, yielding cluster- and necklace-like aggregates, respectively. Magnetization, Mössbauer spectroscopy, and microscopy measurements indicate that the arrangement of the particles within the aggregates affects the magnetic properties of the particles resulting in smaller particles in the clusters having higher superparamagnetic blocking temperatures than larger particles in the necklaces.

AB - Magnetite/maghemite nanoparticles were synthesized in the presence of either dextran or polyvinyl alcohol, yielding cluster- and necklace-like aggregates, respectively. Magnetization, Mössbauer spectroscopy, and microscopy measurements indicate that the arrangement of the particles within the aggregates affects the magnetic properties of the particles resulting in smaller particles in the clusters having higher superparamagnetic blocking temperatures than larger particles in the necklaces.

KW - Dextran

KW - Ferrofluids

KW - Maghemite

KW - Magnetic properties

KW - Magnetite

KW - Mössbauer spectroscopy

KW - Nanoscale particles

KW - Polyvinyl alcohol

KW - Synthesis

UR - http://www.scopus.com/inward/record.url?scp=0035054869&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(00)01226-9

DO - 10.1016/S0304-8853(00)01226-9

M3 - Article

AN - SCOPUS:0035054869

SN - 0304-8853

VL - 225

SP - 41

EP - 46

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-2

ER -

Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol

Abstract

Keywords

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