Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn(x)Co(1-x)Fe2O4 Nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10432596" target="_blank" >RIV/00216208:11320/21:10432596 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10432596

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4YiJzIDSzM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4YiJzIDSzM</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.1c06211" target="_blank" >10.1021/acs.jpcc.1c06211</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn(x)Co(1-x)Fe2O4 Nanoparticles

Popis výsledku v původním jazyce

Understanding the complex link among composition, microstructure, and magnetic properties paves the way to the rational design of well-defined magnetic materials. In this context, the evolution of the magnetic and structural properties in a series of oleate-capped manganese-substituted cobalt ferrites [Mn(x)Co(1-x)Fe2O4] with variable Co/Mn molar ratios is deeply discussed. Single-phase ferrites with similar crystallite and particle sizes (about 10 nm), size dispersity (14%), and weight percentage of capping oleate molecules (17%) were obtained by an oleate-based solvothermal approach. The similarities among the samples permitted the interpretation of the results exclusively on the basis of the actual composition, beyond the other parameters. The temperature and magnetic field dependences of the magnetization were studied together with the interparticle interactions by DC magnetometry. Characteristic temperatures (T-max, T-diff, and T-b), coercivity, anisotropy field, and reduced remanence were found to be affected by the Co/Mn ratio, mainly due to the magnetic anisotropy, interparticle interactions, and particle volume distribution. In addition, the cobalt and manganese distributions were hypothesized on the basis of the chemical composition, the inversion degree obtained by Fe-57 Mössbauer spectroscopy, the anisotropy constant, and the saturation magnetization.

Název v anglickém jazyce

Evolution of the Magnetic and Structural Properties with the Chemical Composition in Oleate-Capped Mn(x)Co(1-x)Fe2O4 Nanoparticles

Popis výsledku anglicky

Understanding the complex link among composition, microstructure, and magnetic properties paves the way to the rational design of well-defined magnetic materials. In this context, the evolution of the magnetic and structural properties in a series of oleate-capped manganese-substituted cobalt ferrites [Mn(x)Co(1-x)Fe2O4] with variable Co/Mn molar ratios is deeply discussed. Single-phase ferrites with similar crystallite and particle sizes (about 10 nm), size dispersity (14%), and weight percentage of capping oleate molecules (17%) were obtained by an oleate-based solvothermal approach. The similarities among the samples permitted the interpretation of the results exclusively on the basis of the actual composition, beyond the other parameters. The temperature and magnetic field dependences of the magnetization were studied together with the interparticle interactions by DC magnetometry. Characteristic temperatures (T-max, T-diff, and T-b), coercivity, anisotropy field, and reduced remanence were found to be affected by the Co/Mn ratio, mainly due to the magnetic anisotropy, interparticle interactions, and particle volume distribution. In addition, the cobalt and manganese distributions were hypothesized on the basis of the chemical composition, the inversion degree obtained by Fe-57 Mössbauer spectroscopy, the anisotropy constant, and the saturation magnetization.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA19-02584S" target="_blank" >GA19-02584S: Modifikace néelovských a brownovských relaxačních vlastností nanočástic pro magnetické zobrazovací metody</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

125

Číslo periodika v rámci svazku

37

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

20626-20638

Kód UT WoS článku

000702017100046

EID výsledku v databázi Scopus

2-s2.0-85115794719