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Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo<sub>5</sub> : Multiscale modeling and element-specific measurements

Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo5 : Multiscale modeling and element-specific measurements

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DONGES, Andreas, Sergii KHMELEVSKYI, Andras DEAK, Radu-Marius ABRUDAN, Detlef SCHMITZ, Ilie RADU, Florin RADU, László SZUNYOGH, Ulrich NOWAK, 2017. Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo5 : Multiscale modeling and element-specific measurements. In: Physical Review B. 96(2), 024412. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.96.024412

@article{Donges2017-07-11Magne-39674, title={Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo5 : Multiscale modeling and element-specific measurements}, year={2017}, doi={10.1103/PhysRevB.96.024412}, number={2}, volume={96}, issn={2469-9950}, journal={Physical Review B}, author={Donges, Andreas and Khmelevskyi, Sergii and Deak, Andras and Abrudan, Radu-Marius and Schmitz, Detlef and Radu, Ilie and Radu, Florin and Szunyogh, László and Nowak, Ulrich}, note={Article Number: 024412} }

Szunyogh, László Radu, Ilie Khmelevskyi, Sergii Radu, Florin Schmitz, Detlef Radu, Ilie We use a multiscale approach linking ab initio calculations for the parametrization of an atomistic spin model with spin dynamics simulations based on the stochastic Landau-Lifshitz-Gilbert equation to investigate the thermal magnetic properties of the ferrimagnetic rare-earth transition-metal intermetallic DyCo5. Our theoretical findings are compared to elemental resolved measurements on DyCo5 thin films using the x-ray magnetic circular dichroism technique. With our model, we are able to accurately compute the complex temperature dependence of the magnetization. The simulations yield a Curie temperature of TC=1030K and a compensation point of Tcomp=164K, which is in a good agreement with our experimental result of Tcomp=120K. The spin reorientation transition is a consequence of competing elemental magnetocrystalline anisotropies in connection with different degrees of thermal demagnetization in the Dy and Co sublattices. Experimentally, we find this spin reorientation in a region from TSR1,2=320 to 360K, whereas in our simulations the Co anisotropy appears to be underestimated, shifting the spin reorientation to higher temperatures. Abrudan, Radu-Marius Deak, Andras 2017-07-27T08:46:29Z Szunyogh, László Schmitz, Detlef Deak, Andras Donges, Andreas Magnetization compensation and spin reorientation transition in ferrimagnetic DyCo<sub>5</sub> : Multiscale modeling and element-specific measurements Radu, Florin Donges, Andreas Nowak, Ulrich 2017-07-27T08:46:29Z eng Abrudan, Radu-Marius Khmelevskyi, Sergii Nowak, Ulrich 2017-07-11

Dateiabrufe seit 27.07.2017 (Informationen über die Zugriffsstatistik)

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