TY - JOUR
T1 - Studies of remnant magnetoresistance in granular AuCo films
AU - Peleg, N.
AU - Gorodetsky, G.
N1 - Funding Information:
We thank Prof. S. Shtrikman for most valuable suggestions and stimulating discussions. This research was supported by The Israel Science Foundation founded by the Israel Academy of Sciences and Humanities.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - The observation of remanence effects in the magnetoresistance of a granular Au0.82Co0.18 film is reported. The results obtained, at low temperatures and low magnetic fields, are analyzed on the basis of a simple model for remnant giant magnetoresistance. The comparison with similarly measured magnetization remanence, shows that mainly the small ferromagnetic Co particles, of volume V < 4.5 nm3, account for the giant magnetoresistance (GMR). The novel approach applied here for analyzing the dominant particles size in GMR, could be used for other granular magnetic materials as well.
AB - The observation of remanence effects in the magnetoresistance of a granular Au0.82Co0.18 film is reported. The results obtained, at low temperatures and low magnetic fields, are analyzed on the basis of a simple model for remnant giant magnetoresistance. The comparison with similarly measured magnetization remanence, shows that mainly the small ferromagnetic Co particles, of volume V < 4.5 nm3, account for the giant magnetoresistance (GMR). The novel approach applied here for analyzing the dominant particles size in GMR, could be used for other granular magnetic materials as well.
KW - Fine particles
KW - Giant magnetoresistance
KW - Superparamagnetism
KW - Thin films
UR - http://www.scopus.com/inward/record.url?scp=0033513791&partnerID=8YFLogxK
U2 - 10.1016/S0304-8853(98)00304-7
DO - 10.1016/S0304-8853(98)00304-7
M3 - Article
AN - SCOPUS:0033513791
SN - 0304-8853
VL - 191
SP - 354
EP - 358
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 3
ER -