TITLE

Magnetic properties of self-assembled interacting nanoparticles

AUTHOR(S)
Kechrakos, D.; Trohidou, K. N.
PUB. DATE
December 2002
SOURCE
Applied Physics Letters;12/9/2002, Vol. 81 Issue 24, p4574
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The temperature-dependent magnetization and the hysteresis properties (remanence and coercivity) of magnetic nanoparticle arrays are studied by Monte Carlo simulations. An oscillatory variation of the remanence with layer coverage and accompanying peaks in the coercive field are predicted at low temperatures, due to dipolar interparticle interactions. The blocking temperature of the arrays decreases with the inverse cube of the interparticle spacing (T[sub d]∼d[sub -3]) and it remains almost unchanged with film thickness above one monolayer. Our results are compared with recent experiments on self-assembled Co nanoparticle arrays.
ACCESSION #
8633283

 

Related Articles

  • Pattern formation in an array of magnetic nanoscale rods mimics magnetic-dipole interaction-driven spinodal decomposition. Wolf, H.; Birringer, R. // Journal of Applied Physics;10/1/2005, Vol. 98 Issue 7, p074303 

    Magnetic-field-assisted self-assembly of magnetic-dipole moment carrying aerosol-grown iron nanoparticles on a nonmagnetic substrate results in the formation of magnetic nanoscale rods and bundles thereof. The magnetic dipolar interaction between the bundles essentially drives the formation of...

  • Fabrication of Ni nanoparticles and their size-selective self-assembly into chains under external magnetic field. Singamaneni, Srikanth; Bliznyuk, Valery // Applied Physics Letters;10/17/2005, Vol. 87 Issue 16, p162511 

    In this letter, we report a simple method for the preparation of colloidal solutions of nickel nanoparticles through the ultrasonication of thermally evaporated ultrathin films. Atomic force microscopy imaging revealed that the particles had a narrow size distribution centered at 9.6 nm....

  • Superstructures of self-assembled multiferroic core-shell nanoparticles and studies on magneto-electric interactions. Sreenivasulu, G.; Petrov, V. M.; Chavez, F. A.; Srinivasan, G. // Applied Physics Letters;8/18/2014, Vol. 105 Issue 7, p1 

    Superstructures of linear chains and arrays of chemically self-assembled core-shell nanoparticles of nickel ferrite and barium titanate have been obtained by magnetic-field-assisted assembly (MFAA). Studies on strain mediated magneto-electric (ME) effects by ME voltage coefficient (MEVC)...

  • Materials science: Let assemblies bloom. Tonzani, Stefano // Nature;2/19/2009, Vol. 457 Issue 7232, p974 

    The article discusses research on ways in which human-created multi-component systems can assemble when placed under the influence of a magnetic field. Self-assembly is typically driven by forces such as hydrophobicity and the formation of hydrogen bonds. The system studied in this paper is a...

  • Structural and Viscous Properties of Bidispersed Magnetic Colloids. Virpura, Hiral; Parmar, Mayur; Dave, Vishaka; Patel, Rajesh // AIP Conference Proceedings;2014, Vol. 1591, p282 

    We demonstrate here certain structural properties and flow behavior of bidispersed magnetic colloids. Under the application of magnetic field it is observed that the magnetic nanoparticles are filled inside the structural microcavities formed due to the association of large magnetic particles,...

  • Emergence of reconfigurable wires and spinners via dynamic self-assembly. Kokot, Gasper; Piet, David; Whitesides, George M.; Aranson, Igor S.; Snezhko, Alexey // Scientific Reports;3/27/2015, p9528 

    Dissipative colloidal materials use energy to generate and maintain structural complexity. The energy injection rate, and properties of the environment are important control parameters that influence the outcome of dynamic self-assembly. Here we demonstrate that dispersions of magnetic...

  • Aggregation resistant zwitterated superparamagnetic nanoparticles. Rouhana, Layal; Schlenoff, Joseph // Journal of Nanoparticle Research;May2012, Vol. 14 Issue 5, p1 

    Superparamagnetic nanoparticles (NPs) are promising for biomedical applications since they can be directed toward the organ of interest using an external magnetic field. They are also good contrast agents for magnetic resonance imaging and have potential for the treatment of malignant tumors...

  • Adsorption of colloidal particles by Brownian dynamics simulation: Kinetics and surface structures. Gray, Jeffrey J.; Bonnecaze, Roger T. // Journal of Chemical Physics;1/15/2001, Vol. 114 Issue 3 

    Careful control of the microstructure of an adsorbed monolayer of colloidal particles is important for creating nanostructured devices through self-assembly processes. We present a computational model study for self-assembly of colloidal or nanoscale particulate systems. We develop a new...

  • Self-assembly of mesoscopically ordered chromatic polydiacetylene/silica nanocomposites. Lu, Yunfeng; Yang, Yi; Sellinger, Alan; Lu, Mengcheng; Huang, Jinman; Fan, Hongyou; Haddad, Raid; Lopez, Gabriel; Burns, Alan R.; Sasaki, Darryl Y.; Shelnutt, John; Brinker, C. Jeffrey // Nature;4/19/2001, Vol. 410 Issue 6831, p913 

    Focuses on a study on the self-assembly of conjugated polymer/silica nanocomposite films with hexagonal, cubic or lamellar mesoscopic order using polymerizable amphiphilic diacetylene molecules as both structure-directing agents and monomers. Influence of the choice of surfactant on the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics