Temperature and field dependences of transverse relaxivity of Co-Zn ferrite nanoparticles coated with silica: the role of magnetic properties and different regimes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00541752" target="_blank" >RIV/68378271:_____/21:00541752 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11110/21:10427455 RIV/00216208:11320/21:10427455 RIV/00023001:_____/21:00080756
Result on the web
<a href="https://doi.org/10.1016/j.matchemphys.2020.124178" target="_blank" >https://doi.org/10.1016/j.matchemphys.2020.124178</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchemphys.2020.124178" target="_blank" >10.1016/j.matchemphys.2020.124178</a>

Result language
angličtina
Original language name
Temperature and field dependences of transverse relaxivity of Co-Zn ferrite nanoparticles coated with silica: the role of magnetic properties and different regimes
Original language description
The transverse relaxivity r2 depends on multiple factors, most importantly on magnetic properties and the size of the particles, including both the size of magnetic cores and the effective size of whole particles present as individual entities in the suspension. The current study probes the transverse relaxivity of ferrimagnetic CoxZnyFe3-x-yO4 nanoparticles whose behavior varies from the blocked state, across the superparamagnetic regime to the vicinity of the paramagnetic state, while other parameters, namely the size of the magnetic cores (≈10 nm), the size of whole colloidally stable particles, and their geometry (≈30 nm-sized clusters of crystallites uniformly coated with ≈12 nm thick silica shell) are kept the same. Importantly, the field and temperature dependences of transverse relaxivity are discussed in relation to relevant theoretical models, i.e., motional averaging and static dephasing regimes.
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
—
OECD FORD branch
21001 - Nano-materials (production and properties)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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