DOI: 10.1063/1.1362333. Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal ε-Co nanoparticles

Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal ε-Co nanoparticles

10.1063/1.1362333

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

A method of producing high-quality magnetic colloidal dispersions by the rapid pyrolysis of cobalt carbonyl in an inert atmosphere was employed to produce monodispersed, stabilized, defect-free ε-cobalt nanocrystals, with spherical shapes and sizes ranging from 3 to 17 nm. The size distribution and the shape of the nanocrystals were controlled by varying the surfactant (oleic acid, phosphonic oxides and acids, etc.), its concentration, and the reaction temperature. These particles have been observed to produce two-dimensional self-assemblies when evaporated at low rates in a controlled atmosphere. A collective behavior due to dipolar interactions has been observed in the low susceptibility measurements corresponding to a highly ordered fine particles system.

Bibliography

Puntes, V. F., Krishnan, K. M., & Alivisatos, P. (2001). Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal Îµ-Co nanoparticles. Applied Physics Letters, 78(15), 2187â2189.

Authors 3

Victor F. Puntes (first)
Kannan M. Krishnan (additional)
Paul Alivisatos (additional)

References 24 Referenced 284

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 10:16 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 2:55 p.m.)
Indexed	1 month, 1 week ago (July 22, 2025, 6:54 a.m.)
Issued	24 years, 4 months ago (April 9, 2001)
Published	24 years, 4 months ago (April 9, 2001)
Published Print	24 years, 4 months ago (April 9, 2001)

Funders 0

None

BibTeX

@article{Puntes_2001, title={Synthesis, self-assembly, and magnetic behavior of a two-dimensional superlattice of single-crystal ε-Co nanoparticles}, volume={78}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1362333}, DOI={10.1063/1.1362333}, number={15}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Puntes, Victor F. and Krishnan, Kannan M. and Alivisatos, Paul}, year={2001}, month=apr, pages={2187–2189} }

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