Title :
UV-VIS spectra of small iron particles
Author :
Blanco, M.C. ; Meira, Ana ; Baldomir, D. ; Rivas, J. ; Lopez-Quintela, M.A.
Author_Institution :
Dept. of Phys. Chem., Santiago de Compostela Univ., Spain
fDate :
3/1/1994 12:00:00 AM
Abstract :
UV-VIS absorption spectra of ultrafine iron particles obtained in microemulsions were measured from 290 nm up to 550 nm. There was observed the existence of three bands and a band shift towards a higher energy region 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 effective mass is evaluated to be 0.20 times the mass of a bare electron
Keywords :
effective mass (band structure); emulsions; iron; size effect; ultraviolet spectra of inorganic solids; visible spectra of inorganic solids; 290 to 550 nm; Fe; UV-VIS absorption spectra; electron-hole effective mass; energy shift; microemulsions; quantum size effect; ultrafine iron particles; Absorption; Effective mass; Electrons; Iron; Magnetic properties; Optical arrays; Particle measurements; Physics; Size control; Water;
Journal_Title :
Magnetics, IEEE Transactions on
