THE EVOLUTION OF THE PARTICLE-SHAPE DISTRIBUTION DURING THE FORMATIONOF IRON NANOPARTICLES IN THE PRESENCE OF TUBULAR LECITHIN ASSEMBLIES

Authors
CAIN JL NIKLES DE
Citation
Jl. Cain et De. Nikles, THE EVOLUTION OF THE PARTICLE-SHAPE DISTRIBUTION DURING THE FORMATIONOF IRON NANOPARTICLES IN THE PRESENCE OF TUBULAR LECITHIN ASSEMBLIES, IEEE transactions on magnetics, 33(5), 1997, pp. 3718-3720
Citations number
14
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
2
Pages
3718 - 3720
Database
ISI
SICI code
0018-9464(1997)33:5<3718:TEOTPD>2.0.ZU;2-0
Abstract
Iron particles were prepared by the sodium borohydride reduction of fe rrous ion in tubular lecithin assemblies and a 1200 Oe magnetic field, When the reaction was quenched after two minutes more than 90% of the particles were acicular, single crystal iron, As the reaction proceed ed the percentage of acicular particles decreased, while spherical and chains-of-sphere particles were formed. After 30 minutes the predomin ant particle shape was chains-of-spheres. This change in particle shap e distribution was attributed to the break-up of the lecithin assembli es during the course of the reduction.