http://www.cnr.it/ontology/cnr/individuo/prodotto/ID228863

NMR-D study of the local spin dynamics and magnetic anisotropy in different nearly monodispersed ferrite nanoparticles (Articolo in rivista)

Type

Label

NMR-D study of the local spin dynamics and magnetic anisotropy in different nearly monodispersed ferrite nanoparticles (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

Bordonali, L; Kalaivani, T; Sabareesh, KPV; Innocenti, C; Fantechi, E; Sangregorio, C; Casula, MF; Lartigue, L; Larionova, J; Guari, Y; Corti, M; Arosio, P; Lascialfari, A (2013)
NMR-D study of the local spin dynamics and magnetic anisotropy in different nearly monodispersed ferrite nanoparticles
in Journal of physics. Condensed matter (Print); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Bordonali, L; Kalaivani, T; Sabareesh, KPV; Innocenti, C; Fantechi, E; Sangregorio, C; Casula, MF; Lartigue, L; Larionova, J; Guari, Y; Corti, M; Arosio, P; Lascialfari, A (literal)

Pagina inizio

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1 ] Univ Uniroma TRE, Dept Phys E Amaldi, Rome, Italy 2 ] Univ Pavia, INSTM, I-27100 Pavia, Italy 3 ] Univ Pavia, Dept Phys, I-27100 Pavia, Italy 4 ] Univ Milan, INSTM, I-20134 Milan, Italy 5 ] Univ Milan, Dept Phys, I-20134 Milan, Italy 6 ] S3 CNR, Inst Nanosci, I-41125 Modena, Italy 7 ] Univ Florence, INSTM, I-50019 Florence, Italy 8 ] Univ Florence, Dept Chem U Schiff, I-50019 Florence, Italy 9 ] CNR ISTM, I-20133 Milan, Italy 10 ] Univ Cagliari, INSTM, I-09042 Cagliari, Italy 11 ] Univ Cagliari, Dept Chem Sci, I-09042 Cagliari, Italy 12 ] Univ Montpellier 2, Inst Charles Gerhardt Montpellier, CNRS, UMR Chim Mol & Org Solide 5253,UM2, F-34095 Montpellier 5, France (literal)

Titolo

NMR-D study of the local spin dynamics and magnetic anisotropy in different nearly monodispersed ferrite nanoparticles (literal)

Abstract

We present a systematic experimental comparison of the superparamagnetic relaxation time constants obtained by means of dynamic magnetic measurements and H-1-NMR relaxometry, on ferrite-based nanosystems with different composition, various core sizes and dispersed in different solvents. The application of a heuristic model for the relaxivity allowed a comparison between the reversal time of magnetization as seen by NMR and the results from the AC susceptibility experiments, and an estimation of fundamental microscopic properties. A good agreement between the NMR and AC results was found when fitting the AC data to a Vogel-Fulcher law. Key parameters obtained from the model have been exploited to evaluate the impact of the contribution from magnetic anisotropy to the relaxivity curves and estimate the minimum approach distance of the bulk solvent. (literal)

Editore