UV-VIS SPECTRA OF SMALL IRON PARTICLES

Authors
BLANCO MC MEIRA A BALDOMIR D RIVAS J LOPEZQUINTELA MA
Citation
Mc. Blanco et al., UV-VIS SPECTRA OF SMALL IRON PARTICLES, IEEE transactions on magnetics, 30(2), 1994, pp. 739-741
Citations number
21
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
30
Issue
2
Year of publication
1994
Part
2
Pages
739 - 741
Database
ISI
SICI code
0018-9464(1994)30:2<739:USOSIP>2.0.ZU;2-V
Abstract
UV-Vis absorption spectra of ultrafine iron particles obtained in micr oemulsions were measured from 290 nm up to 550 nm. It was observed the existence of three bands and a band shift towards higher energy regio n by 0.1-0.2 eV compared with that of bulk iron. This energy shift can be interpreted in terms of a quantum size effect. The electron-hole e ffective mass is evaluated to be 0.20 times the mass of a bare electro n.