The processing and characterization of magnetic nanobowls

A. K. Srivastava; S. Madhavi; T. J. White; R. V. Ramanujan

doi:10.1016/j.tsf.2005.10.015

The processing and characterization of magnetic nanobowls

A. K. Srivastava, S. Madhavi, T. J. White, R. V. Ramanujan^*

^*Corresponding author for this work

Nanyang Technological University

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

12 Citations (Scopus)

Abstract

Nanostructured arrays in two and three dimensions are known to exhibit novel properties. Magnetic nanobowl arrays of cobalt (Co) and cobalt ferrite (CoFe₂O₄) have been fabricated by vacuum assisted infiltration of precursors inside the interstitial spaces of a colloidal template of polystyrene (PS) latex spheres (1 μm diameter). Template removal was carried out by annealing followed by toluene etching, which leaves an array of cobalt or cobalt ferrite nanobowls. The coercivity of cobalt nanobowls was found to be greater than the coercivity of cobalt nanoparticles of the same size range; the coercivity of cobalt ferrite nanobowls was greater than that of cobalt nanobowls.

Original language	English
Pages (from-to)	93-96
Number of pages	4
Journal	Thin Solid Films
Volume	505
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2005.10.015
Publication status	Published - May 18 2006
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

Keywords

Cobalt
Cobalt ferrite
Nanobowl
PS colloidal template

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10.1016/j.tsf.2005.10.015

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title = "The processing and characterization of magnetic nanobowls",

abstract = "Nanostructured arrays in two and three dimensions are known to exhibit novel properties. Magnetic nanobowl arrays of cobalt (Co) and cobalt ferrite (CoFe2O4) have been fabricated by vacuum assisted infiltration of precursors inside the interstitial spaces of a colloidal template of polystyrene (PS) latex spheres (1 μm diameter). Template removal was carried out by annealing followed by toluene etching, which leaves an array of cobalt or cobalt ferrite nanobowls. The coercivity of cobalt nanobowls was found to be greater than the coercivity of cobalt nanoparticles of the same size range; the coercivity of cobalt ferrite nanobowls was greater than that of cobalt nanobowls.",

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T1 - The processing and characterization of magnetic nanobowls

AU - Srivastava, A. K.

AU - Madhavi, S.

AU - White, T. J.

AU - Ramanujan, R. V.

PY - 2006/5/18

Y1 - 2006/5/18

N2 - Nanostructured arrays in two and three dimensions are known to exhibit novel properties. Magnetic nanobowl arrays of cobalt (Co) and cobalt ferrite (CoFe2O4) have been fabricated by vacuum assisted infiltration of precursors inside the interstitial spaces of a colloidal template of polystyrene (PS) latex spheres (1 μm diameter). Template removal was carried out by annealing followed by toluene etching, which leaves an array of cobalt or cobalt ferrite nanobowls. The coercivity of cobalt nanobowls was found to be greater than the coercivity of cobalt nanoparticles of the same size range; the coercivity of cobalt ferrite nanobowls was greater than that of cobalt nanobowls.

AB - Nanostructured arrays in two and three dimensions are known to exhibit novel properties. Magnetic nanobowl arrays of cobalt (Co) and cobalt ferrite (CoFe2O4) have been fabricated by vacuum assisted infiltration of precursors inside the interstitial spaces of a colloidal template of polystyrene (PS) latex spheres (1 μm diameter). Template removal was carried out by annealing followed by toluene etching, which leaves an array of cobalt or cobalt ferrite nanobowls. The coercivity of cobalt nanobowls was found to be greater than the coercivity of cobalt nanoparticles of the same size range; the coercivity of cobalt ferrite nanobowls was greater than that of cobalt nanobowls.

KW - Cobalt

KW - Cobalt ferrite

KW - Nanobowl

KW - PS colloidal template

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The processing and characterization of magnetic nanobowls

Abstract

ASJC Scopus Subject Areas

Keywords

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