Constrained Monte Carlo Method and Calculation of the Temperature Dependence of Magnetic Anisotropy

Asselin, Pierre; Evans, Richard Francis L.; Barker, Joe; Chantrell, Roy W.; Yanes Díaz, Rocio; Chubykalo-Fesenko, Oksana; Hinzke, Denise; Nowak, Ulrich

Constrained Monte Carlo Method and Calculation of the Temperature Dependence of Magnetic Anisotropy

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Datum

2010

Autor:innen

Asselin, Pierre

Evans, Richard Francis L.

Barker, Joe

Chantrell, Roy W.

Yanes Díaz, Rocio

Chubykalo-Fesenko, Oksana

Hinzke, Denise

Nowak, Ulrich

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Gesperrt bis

1. Januar 2100

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. 2010, 82(5), 054415. Available under: doi: 10.1103/PhysRevB.82.054415

Zusammenfassung

We introduce a constrained Monte Carlo method which allows us to traverse the phase space of a classical spin system while fixing the magnetization direction. Subsequently we show the method's capability to model the temperature dependence of magnetic anisotropy, and for bulk uniaxial and cubic anisotropies we recover the low-temperature Callen-Callen power laws in M. We also calculate the temperature scaling of the 2-ion anisotropy in L10 FePt, and recover the experimentally observed M2.1 scaling. The method is newly applied to evaluate the temperature dependent effective anisotropy in the presence of the N'eel surface anisotropy in thin films with different easy axis configurations. In systems having different surface and bulk easy axes, we show the capability to model the temperature-induced reorientation transition. The intrinsic surface anisotropy is found to follow a linear temperature behavior in a large range of temperatures.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

ASSELIN, Pierre, Richard Francis L. EVANS, Joe BARKER, Roy W. CHANTRELL, Rocio YANES DÍAZ, Oksana CHUBYKALO-FESENKO, Denise HINZKE, Ulrich NOWAK, 2010. Constrained Monte Carlo Method and Calculation of the Temperature Dependence of Magnetic Anisotropy. In: Physical Review B. 2010, 82(5), 054415. Available under: doi: 10.1103/PhysRevB.82.054415

BibTex

@article{Asselin2010Const-9386,
  year={2010},
  doi={10.1103/PhysRevB.82.054415},
  title={Constrained Monte Carlo Method and Calculation of the Temperature Dependence of Magnetic Anisotropy},
  number={5},
  volume={82},
  journal={Physical Review B},
  author={Asselin, Pierre and Evans, Richard Francis L. and Barker, Joe and Chantrell, Roy W. and Yanes Díaz, Rocio and Chubykalo-Fesenko, Oksana and Hinzke, Denise and Nowak, Ulrich},
  note={Article Number: 054415}
}

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