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

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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number6
DOIs
StatePublished - 2002

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