Unconventional magnetic behavior of iron-oxide nanoparticles in polymeric matrices

Authors
Testa, AM Foglia, S Suber, L Fiorani, D Casas, L Roig, A Molins, E Greneche, JM Tejada, J
Citation
Am. Testa et al., Unconventional magnetic behavior of iron-oxide nanoparticles in polymeric matrices, J APPL PHYS, 90(3), 2001, pp. 1534-1539
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
90
Issue
3
Year of publication
2001
Pages
1534 - 1539
Database
ISI
SICI code
0021-8979(20010801)90:3<1534:UMBOIN>2.0.ZU;2-#
Abstract
We report the results of magnetization and Fe-57 Mossbauer spectroscopy mea surements performed in the temperature range 5-300 K on composites containi ng iron-oxide nanoparticles encased in polystyrene type resins. After carry ing out a suitable field treatment in order to decouple the particles from the matrix, a fraction of the particles freely rotate in response to an app lied magnetic field. (C) 2001 American Institute of Physics.