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Phys. Rev. B 73, 012406 (2006) [4 pages]

Field-induced structural transition and quasistatic susceptibility of one-dimensional magnetic nanoparticle chains

Haiwen Xi, Yiming Shi, Kai-Zhong Gao, and Song Xue
Recording Head Operations (RHO), Seagate Technology, 7801 Computer Avenue South, Bloomington, Minnesota 55435, USA
Received 7 August 2005; published 13 January 2006

By studying the dipolar interaction and the elastic interaction in the ordered magnetic nanoparticle chains connected by or imbedded in organic medium, we predict a Peierls-like structural phase transition under proper conditions. The phase transition can be induced by applying a transverse magnetic field and manifests itself in the magnetization curve measurements. The magnetic effect of the Peierls phase and of the magnetoelastic coupling is also reflected in the magnetic susceptibility of the magnetic nanoparticles chains. A phase diagram of the nanoparticle chain structure has also been established.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.73.012406
DOI: 10.1103/PhysRevB.73.012406
PACS: 75.75.+a; 75.50.Tt; 81.07.Bc; 73.22.Gk
  • 75.75.+a
    Magnetic properties of nanostructures
  • 75.50.Tt
    Fine-particle magnetic systems; nanocrystalline materials
  • 81.07.Bc
    Nanocrystalline materials: fabrication and characterization
  • 73.22.Gk
    Broken symmetry phases (nanoscale materials)
  • YEAR: 2006
KEYWORDS: nanoparticles, magnetic particles, solid-state phase transformations, magnetic susceptibility, magnetisation, magnetoelastic effects

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