Magnetic nanoparticles (MNPs) of spinel type iron oxide (of approximately 4 nm) mineralized inside the internal cavity of a mini ferritin-type protein have been investigated by means of electron magnetic resonance (EMR) spectroscopy. EMR measurements have been recorded at different temperatures in perpendicular and parallel configurations. The spectra have been interpreted using an approach based on the giant spin model. We confirm the quantum behavior of the MNPs, moreover, the thermal evolution of the spin system in terms of population of excited spin states is showed.
An EPR Study of Small Magnetic Nanoparticles / Cini, Alberto; Ceci, Pierpaolo; Falvo, Elisabetta; Gatteschi, Dante; Fittipaldi, Maria. - In: ZEITSCHRIFT FÜR PHYSIKALISCHE CHEMIE. - ISSN 0942-9352. - STAMPA. - 231:(2017), pp. 745-757. [10.1515/zpch-2016-0846]
An EPR Study of Small Magnetic Nanoparticles
CINI, ALBERTO;GATTESCHI, DANTE;FITTIPALDI, MARIA
2017
Abstract
Magnetic nanoparticles (MNPs) of spinel type iron oxide (of approximately 4 nm) mineralized inside the internal cavity of a mini ferritin-type protein have been investigated by means of electron magnetic resonance (EMR) spectroscopy. EMR measurements have been recorded at different temperatures in perpendicular and parallel configurations. The spectra have been interpreted using an approach based on the giant spin model. We confirm the quantum behavior of the MNPs, moreover, the thermal evolution of the spin system in terms of population of excited spin states is showed.
| File | Dimensione | Formato | |
|---|---|---|---|
|
ZPC_2017.pdf
accesso aperto
Descrizione: ZPC_2017
Tipologia:
Pdf editoriale (Version of record)
Licenza:
Open Access
Dimensione
875.71 kB
Formato
Adobe PDF
|
875.71 kB | Adobe PDF |
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
