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Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt

Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt

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Prüfsumme: MD5:3bc18b1a67e17ba1af2f03e37a03c09b

OSTLER, Tom A., Matthew O. A. ELLIS, Denise HINZKE, Ulrich NOWAK, 2014. Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt. In: Physical Review B. 90(9), 094402. ISSN 0163-1829. eISSN 1095-3795

@article{Ostler2014Tempe-29327, title={Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt}, year={2014}, doi={10.1103/PhysRevB.90.094402}, number={9}, volume={90}, issn={0163-1829}, journal={Physical Review B}, author={Ostler, Tom A. and Ellis, Matthew O. A. and Hinzke, Denise and Nowak, Ulrich}, note={Article Number: 094402} }

2014-11-27T09:49:39Z 2014-11-27T09:49:39Z Temperature-dependent ferromagnetic resonance via the Landau-Lifshitz-Bloch equation : Application to FePt Nowak, Ulrich Ostler, Tom A. eng Using the Landau-Lifshitz-Bloch (LLB) equation for ferromagnetic materials, we derive analytic expressions for temperature-dependent absorption spectra as probed by ferromagnetic resonance. By analyzing the resulting expressions, we can predict the variation of the resonance frequency and damping with temperature and coupling to the thermal bath. We base our calculations on the technologically relevant L1<sub>0</sub>FePt, parametrized from atomistic spin dynamics simulations, with the Hamiltonian mapped from ab initio parameters. By constructing a multimacrospin model based on the LLB equation and exploiting GPU acceleration, we extend the study to investigate the effects on the damping and resonance frequency in μm-sized structures. Ellis, Matthew O. A. Ellis, Matthew O. A. Ostler, Tom A. Nowak, Ulrich Hinzke, Denise Hinzke, Denise 2014

Dateiabrufe seit 27.11.2014 (Informationen über die Zugriffsstatistik)

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