Dipolar interactions in two- and three-dimensional magnetic nanoparticle arrays

Pankaj Poddar; Tamar Telem-Shafir; Tcipi Fried; Gil Markovich

doi:10.1103/PhysRevB.66.060403

Dipolar interactions in two- and three-dimensional magnetic nanoparticle arrays

Pankaj Poddar, Tamar Telem-Shafir, Tcipi Fried, Gil Markovich

School of Chemistry

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

Abstract

Uniform, organically functionalized, 8.5-nm-diameter nanocrystals of (formula presented) were synthesized and assembled into close-packed monolayer as well as multilayer arrays using the Langmuir-Blodgett technique. The ac and dc magnetic susceptibility measurements on arrays in comparison with isolated particles indicate strong dipolar interactions and a spin-glass-like slowing down of relaxation times. Differences in magnetic characteristics between monolayer to multilayer arrays were observed, such as larger remanent magnetization and a higher blocking temperature in the two-dimensional system.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.66.060403
State	Published - 2002

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Dipolar interactions in two- and three-dimensional magnetic nanoparticle arrays

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