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Effect of albumin coating on the magnetic behavior of Mn ferrite nanoclusters.

ABSTRACT: The effect of clustering induced by albumin coating on the magnetic behaviour of ultra-small MnFe₂O₄ nanoparticles has been systematically investigated and compared with that in pure Mn ferrite nanoparticle dense assembly, using a mesoscopic scale approach and numerical simulations reproducing the experimental findings well. Our results provide evidence that in the coated system, the interplay between intra-particle and intra-cluster exchange interactions strongly affects the exchange bias and coercive field values, with the dipolar interactions playing a minor role. Instead, the albumin coating does not affect the thermal stability of the observed superspin glass phase, the freezing temperature being similar in the coated and uncoated systems.

SUBMITTER: Vasilakaki M

PROVIDER: S-EPMC9552874 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Effect of albumin coating on the magnetic behavior of Mn ferrite nanoclusters.

Vasilakaki Marianna M Ntallis Nikolaos N Fiorani Dino D Peddis Davide D Trohidou Kalliopi N KN

Nanoscale advances 20220908 20

The effect of clustering induced by albumin coating on the magnetic behaviour of ultra-small MnFe<sub>2</sub>O<sub>4</sub> nanoparticles has been systematically investigated and compared with that in pure Mn ferrite nanoparticle dense assembly, using a mesoscopic scale approach and numerical simulations reproducing the experimental findings well. Our results provide evidence that in the coated system, the interplay between intra-particle and intra-cluster exchange interactions strongly affects t ...[more]

PMID: 36321142

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