NANOPARTICLE MORPHOLOGY IN A GRANULAR CU-CO ALLOY WITH GIANT MAGNETORESISTANCE

Authors
WANG WD ZHU FW WENG J XIAO JM LAI WY
Citation
Wd. Wang et al., NANOPARTICLE MORPHOLOGY IN A GRANULAR CU-CO ALLOY WITH GIANT MAGNETORESISTANCE, Applied physics letters, 72(9), 1998, pp. 1118-1120
Citations number
15
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
72
Issue
9
Year of publication
1998
Pages
1118 - 1120
Database
ISI
SICI code
0003-6951(1998)72:9<1118:NMIAGC>2.0.ZU;2-O
Abstract
The morphology of nanometer-sized cobalt granules in a granular Cu88Co 12 alloy was directly determined utilizing an atom probe-field ion mic roscope. The granules art: spherical in shape, and exhibit a size dist ribution. Giant magnetoresistance (GMR) was observed in alloys with an average granule size ranging from 1.5 to 6 nm in diameter. A well-kno wn theoretical model of general GMR behavior in magnetic granular syst ems was confirmed based on measurement of size distribution of the gra nules. (C) 1998 American Institute of Physics.