OsPd bimetallic dimer pushes the limit of magnetic anisotropy in atom-sized magnets for data storage

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73615829" target="_blank" >RIV/61989592:15310/22:73615829 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15640/22:73615829
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1361-6528/ac5447/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6528/ac5447/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6528/ac5447" target="_blank" >10.1088/1361-6528/ac5447</a>

Result language
angličtina
Original language name
OsPd bimetallic dimer pushes the limit of magnetic anisotropy in atom-sized magnets for data storage
Original language description
The growing gap between the volume of digital data being created and the extent of available storage capacities stimulates intensive research into surface-supported, well-ordered array of atom-sized magnets that represents the ultimate limit of magnetic data storage. Anchoring transition-metal heterodimers in vacancy defects in the graphene lattice has been identified as a vivid strategy to achieve large magnetic anisotropy energy (MAE) up to 80 meV with an easy axis aligned along the dimer bond. In this paper we have made a significant leap forward finding out MAE of 119 meV for an OsPt dimer and 170 meV for an OsPd dimer bound to a single nitrogen-decorated vacancy defect. The system with the highest MAE and with the theoretical storage density of similar to 490 Tb center dot inch(-2) pushes the current limit of theoretical blocking temperature in graphene-supported transition-metal dimers from similar to 20 to similar to 44 K assuming the relaxation time of 10 years. The mechanism of the enhanced MAE is discussed.
Czech name
—
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
—
OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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