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Journal of Materials Science

, Volume 45, Issue 24, pp 6763–6768 | Cite as

Interface roughness influence on exchange bias effect in La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 bilayers

  • E. Restrepo-ParraEmail author
  • G. Orozco-Hernández
  • J. Urrea-Serna
  • J. F. Jurado
  • J. C. Vargas-Hernández
  • J. C. Riaño-Rojas
  • J. Restrepo
Article

Abstract

A Monte Carlo simulation study of La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 bilayers exchange bias (EB) properties by using a classical Heisenberg model and Monte Carlo method with Metropolis algorithm is addressed. Samples were built atom-by-atom in order to resemble the real roughness. In this model, several contributions included nearest neighbors exchange interactions; two different interface couplings, magnetocrystalline anisotropy and Zeeman term, were considered. Here, an influence of the relaxation steps on the interface roughness is present. Our study focuses on the influence of interface roughness on hysteresis loops, particularly EB field (H ex) and coercive force (H c). Results reveal that H ex and H c decrease as the interface roughness increases.

Keywords

Manganite Coercive Force Coercive Field Exchange Bias Monte Carlo Step 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors gratefully acknowledge the financial support of la Dirección Nacional de Investigaciones during the course of this research, under Project 7785. This study was also supported in part by the GES and GICM Sustainability projects and the IN565CE project of the Antioquia University.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • E. Restrepo-Parra
    • 1
    Email author
  • G. Orozco-Hernández
    • 1
  • J. Urrea-Serna
    • 1
  • J. F. Jurado
    • 1
  • J. C. Vargas-Hernández
    • 1
  • J. C. Riaño-Rojas
    • 2
  • J. Restrepo
    • 3
  1. 1.Departamento de Física y QuímicaUniversidad Nacional de Colombia-Sede ManizalesManizalesColombia
  2. 2.Departamento de Matemáticas y EstadísticaUniversidad Nacional de Colombia-Sede ManizalesManizalesColombia
  3. 3.Grupo de Magnetismo y Simulación G, Instituto de FísicaUniversidad de AntioquiaMedellínColombia

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