Magnetic order in two-dimensional arrays of nanometer-sized superparamagnets

M. R. Scheinfein, Kevin Schmidt, K. R. Heim, G. G. Hembree

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Random two-dimensional island assemblies have three magnetic phases at room temperature as a function of island radius a. These magnetic states are a perpendicularly magnetized random antiferromagnet (a < 1.5 nm), an in-plane superparamagnet (1.5 < a < 3 nm), and an in-plane ferromagnet (a > 3.0 nm) in a superferromagnetic regime. Mean-field and Monte Carlo methods are used to examine order-disorder transitions in two dimensions, and to set minimum interisland coupling strengths.

Original languageEnglish (US)
Pages (from-to)1541-1544
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number9
StatePublished - Feb 26 1996

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assemblies
Monte Carlo method
disorders
radii
room temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Scheinfein, M. R., Schmidt, K., Heim, K. R., & Hembree, G. G. (1996). Magnetic order in two-dimensional arrays of nanometer-sized superparamagnets. Physical Review Letters, 76(9), 1541-1544.

Magnetic order in two-dimensional arrays of nanometer-sized superparamagnets. / Scheinfein, M. R.; Schmidt, Kevin; Heim, K. R.; Hembree, G. G.

In: Physical Review Letters, Vol. 76, No. 9, 26.02.1996, p. 1541-1544.

Research output: Contribution to journalArticle

Scheinfein, MR, Schmidt, K, Heim, KR & Hembree, GG 1996, 'Magnetic order in two-dimensional arrays of nanometer-sized superparamagnets', Physical Review Letters, vol. 76, no. 9, pp. 1541-1544.
Scheinfein, M. R. ; Schmidt, Kevin ; Heim, K. R. ; Hembree, G. G. / Magnetic order in two-dimensional arrays of nanometer-sized superparamagnets. In: Physical Review Letters. 1996 ; Vol. 76, No. 9. pp. 1541-1544.
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