Fingerprints of super spin-glass state in two-dimensional nanoscopic system
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926670" target="_blank" >RIV/60461373:22310/23:43926670 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/44555601:13440/23:43897914
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S1293255823001450" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1293255823001450</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.solidstatesciences.2023.107253" target="_blank" >10.1016/j.solidstatesciences.2023.107253</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Fingerprints of super spin-glass state in two-dimensional nanoscopic system
Popis výsledku v původním jazyce
Novel two-dimensional magnetic assembly was designed, manufactured, and its static and dynamic magnetic response was investigated. The assembly contains Fe3O4 nanoparticles of nominal size 7 nm which were deposited on plasma-treated polypropylene substrate using a grafting technique. The nanoparticles create agglomerates with size distribution ranging nominally from 10 nm to 110 nm. The temperature dependence of zero-field and field-cooled susceptibility is consistent with glassy behavior. The relative shift of maximum in alternating susceptibility Γ ≈ 0.075 and zυ = 10 obtained from critical slowing down analysis also support the formation of the collective states akin to super spin-glass. However, the absence of collapse in dynamic scaling of alternating susceptibility data using predictions for three-dimensional spin-glass with Gaussian distribution of magnetic coupling and two-dimensional bimodal spin-glass suggests that the studied system is not representative of the used limiting models. The investigation of memory effects revealed the coexistence of relaxation phenomena of collective degrees of freedom and individual nanoparticles. The obtained results suggest that the studied assembly is appropriate for the investigation of super spin-glass state in two-dimensional magnetic system with dominant dipolar interaction.
Název v anglickém jazyce
Fingerprints of super spin-glass state in two-dimensional nanoscopic system
Popis výsledku anglicky
Novel two-dimensional magnetic assembly was designed, manufactured, and its static and dynamic magnetic response was investigated. The assembly contains Fe3O4 nanoparticles of nominal size 7 nm which were deposited on plasma-treated polypropylene substrate using a grafting technique. The nanoparticles create agglomerates with size distribution ranging nominally from 10 nm to 110 nm. The temperature dependence of zero-field and field-cooled susceptibility is consistent with glassy behavior. The relative shift of maximum in alternating susceptibility Γ ≈ 0.075 and zυ = 10 obtained from critical slowing down analysis also support the formation of the collective states akin to super spin-glass. However, the absence of collapse in dynamic scaling of alternating susceptibility data using predictions for three-dimensional spin-glass with Gaussian distribution of magnetic coupling and two-dimensional bimodal spin-glass suggests that the studied system is not representative of the used limiting models. The investigation of memory effects revealed the coexistence of relaxation phenomena of collective degrees of freedom and individual nanoparticles. The obtained results suggest that the studied assembly is appropriate for the investigation of super spin-glass state in two-dimensional magnetic system with dominant dipolar interaction.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA21-02550S" target="_blank" >GA21-02550S: Plazmonem indukované zachycení excitovaného spinového stavu v komplexech se spinovým krosoverem</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Solid State Sciences
ISSN
1293-2558
e-ISSN
—
Svazek periodika
142
Číslo periodika v rámci svazku
August 2023
Stát vydavatele periodika
FR - Francouzská republika
Počet stran výsledku
8
Strana od-do
"107253/1"-8
Kód UT WoS článku
001048151100001
EID výsledku v databázi Scopus
2-s2.0-85164701039