Training effect of exchange-bias bilayers within the domain state model

Biternas, Andreas G.; Nowak, Ulrich; Chantrell, Roy W.

Training effect of exchange-bias bilayers within the domain state model

Dateien

2009PRBbias.pdfGröße: 684.44 KBDownloads: 481

Datum

2009

Autor:innen

Biternas, Andreas G.

Nowak, Ulrich

Chantrell, Roy W.

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. 2009, 80, 134419. Available under: doi: 10.1103/PhysRevB.80.134419

Zusammenfassung

An investigation of the temperature dependence of the training effect of various exchange coupled bilayers with different types of anisotropy is presented. We use an atomistic model for the magnetic interactions within a classical Heisenberg spin Hamiltonian. In general, the behavior of the exchange-bias field is separated into low- and high-temperature regions. This separation is made according to the trend of exchange-bias field after the second hysteresis loop and the parameters of the power-law fit for these fields. It is found that with increasing antiferromagnetic thickness, systems follow the same temperature trend but with lower values of the exchange-bias field and a weaker training effect. This is due to the fact that thicker antiferromagnetic layers lead to increased stability of the antiferromagnetic domains. Also, the behavior of the coercive fields is investigated, concluding that the training effect occurs predominantly in the first half of the hysteresis loop.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

BITERNAS, Andreas G., Ulrich NOWAK, Roy W. CHANTRELL, 2009. Training effect of exchange-bias bilayers within the domain state model. In: Physical Review B. 2009, 80, 134419. Available under: doi: 10.1103/PhysRevB.80.134419

BibTex

@article{Biternas2009Train-9297,
  year={2009},
  doi={10.1103/PhysRevB.80.134419},
  title={Training effect of exchange-bias bilayers within the domain state model},
  volume={80},
  journal={Physical Review B},
  author={Biternas, Andreas G. and Nowak, Ulrich and Chantrell, Roy W.},
  note={Article Number: 134419}
}

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Universitätsbibliographie

Ja