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2015 | 127 | 2 | 374-376
Article title

Efficient Calculation of Low Energy Configurations of Nanoparticle Ensembles for Magnetoresistive Sensor Devices by Means of Stochastic Spin Dynamicsand Monte Carlo Methods

Content
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Languages of publication
EN
Abstracts
EN
We present results of Monte Carlo and stochastic spin dynamics simulations of a magnetic nanoparticle model system based on experimentally produced samples. Thermodynamic investigations as well as spin dynamics studies show characteristic features, both resembling magnetic dipole glass behaviour. While spin dynamics studies at T=0 yield a multitude of low energy configurations, thermodynamic simulations show a clear transition between a paramagnetic and a frozen magnetic state. Moreover, we demonstrate the application of experimentally inspired demagnetization protocols to compute low energy configurations of the systems under consideration efficiently.
Keywords
EN
Publisher

Year
Volume
127
Issue
2
Pages
374-376
Physical description
Dates
published
2015-02
Contributors
author
  • Bielefeld Institute for Applied Materials Research, University of Applied Sciences Bielefeld, Wilhelm-Bertelsmann-Str. 10, 33602 Bielefeld, Germany
author
  • Bielefeld Institute for Applied Materials Research, University of Applied Sciences Bielefeld, Wilhelm-Bertelsmann-Str. 10, 33602 Bielefeld, Germany
author
  • Department of Engineering Sciences and Mathematics, University of Applied Sciences Bielefeld, Wilhelm-Bertelsmann-Str. 10, 33602 Bielefeld, Germany
author
  • Department of Engineering Sciences and Mathematics, University of Applied Sciences Bielefeld, Wilhelm-Bertelsmann-Str. 10, 33602 Bielefeld, Germany
author
  • Department of Physics, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
author
  • Department of Physics, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany
References
  • [1] J. Meyer, T. Rempel, M. Schäfers, F. Wittbracht, C. Müller, A.V. Patel, A. Hütten, Smart Mater. Struct. 22, 025032 (2013), doi: 10.1088/0964-1726/22/2/025032
  • [2] C. Müller, K. Kraushaar, A. Doebbe, J.H. Mussgnug, O. Kruse, E. Kroke, A.V. Patel, Chem. Commun. 49, 10163 (2013), doi: 10.1039/C3CC45023F
  • [3] Z. Boudrikis, J.P. Morgan, J. Akerman, A. Stein, P. Politi, S. Langridge, C.H. Marrows, P.L. Stamps, Phys. Rev. Lett. 109, 037203 (2012), doi: 10.1103/PhysRevLett.109.037203
  • [4] L. Engelhardt, C. Schröder, in: Molecular Cluster Magnets, Ed. R.E.P. Winpenny, World Sci., Singapore 2011
  • [5] K. Binder, A.P. Young, Rev. Mod. Phys. 58, 801 (1986), doi: 10.1103/RevModPhys.58.801
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv127n2068kz
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