Electrical transport properties in passivated magnetic small iron particles

Authors
Zhang, XX Liu, H Fung, KK Qin, BX
Citation
Xx. Zhang et al., Electrical transport properties in passivated magnetic small iron particles, PHYSICA B, 279(1-3), 2000, pp. 185-187
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
279
Issue
1-3
Year of publication
2000
Pages
185 - 187
Database
ISI
SICI code
0921-4526(200004)279:1-3<185:ETPIPM>2.0.ZU;2-1
Abstract
Electrical transport properties of a sample composed of small iron particle s of several tens nm was studied in the temperature range 1.8-300 K. TEM st udy indicates that each small particle is covered with a very homogeneous e pitaxial gamma-Fe2O3 Shell that prevents further oxidization of the metal p articles. The temperature dependence of resistivity R(TT) and the field-dep endent current density in the high-field range can be well described by the theory of fluctuation-induced tunneling conduction. (C) 2000 Elsevier Scie nce B.V. All rights reserved.