Bridging atomistic magnetism and coercivity in Nd-Fe-B magnets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00492749" target="_blank" >RIV/68378271:_____/18:00492749 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.scriptamat.2018.04.023" target="_blank" >http://dx.doi.org/10.1016/j.scriptamat.2018.04.023</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.scriptamat.2018.04.023" target="_blank" >10.1016/j.scriptamat.2018.04.023</a>

Result language
angličtina
Original language name
Bridging atomistic magnetism and coercivity in Nd-Fe-B magnets
Original language description
Coercivity in rare-earth permanent magnets depends on the size and shape of magnetic grains. Recent experimental studies have revealed that, however, atomic scale structures around the grain-boundaries of magnets also play a crucial role to determine their coercivity. In this paper, we construct an effective spin model for the Nd2Fe14B structure based on first-principles calculations to describe atomistic magnetization dynamics of the magnetic grains, incorporating the information of the electronic states of the system. We find that the Nd ions located on the surfaces of the grains may have planar magnetic anisotropy, and that they can cause coercivity reduction.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA15-03777S" target="_blank" >GA15-03777S: Environment induced electron structure changes leading to novel magnetic phases</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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