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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61989592:15640/22:73615829

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologie pro budoucnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

NANOTECHNOLOGY

ISSN

0957-4484

e-ISSN

1361-6528

Svazek periodika

33

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

"215001-1"-"215001-7"

Kód UT WoS článku

000762046000001

EID výsledku v databázi Scopus

2-s2.0-85125550993