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Title: The influence of superparamagnetic particle size distribution and ferromagnetic phase on GMR in melt spun Cu-Co granular alloys

Abstract

Magnetic characteristics and structure of granular Cu{sub 90}Co{sub 10} alloy were investigated in order to explain their relationship with electric transport properties. The annealed sample contains mainly Co-particles with sizes of few nanometers and some much larger particles or agglomerations, which are not superparamagnetic. It is shown that the ferromagnetic phase contribution to the total magnetization (calculated applying the new, invented method) and differentiated surface to volume ratio of superparamagnetic particles are the main sources of the observed deviation of the magnetoresistance characteristics from that expected theoretically for superparamagnetic particles of equal size.

Authors:
; ;
Publication Date:
Research Org.:
Polish Academy of Science, Warszawa (PL)
OSTI Identifier:
20000656
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 35; Journal Issue: 5Pt1; Conference: 1999 international magnetics conference (Intermag '99), Kyongju (KR), 05/18/1999--05/21/1999; Other Information: PBD: Sep 1999; Journal ID: ISSN 0018-9464
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MAGNETORESISTANCE; MAGNETIC PROPERTIES; COPPER BASE ALLOYS; COBALT ALLOYS; MICROSTRUCTURE; EXPERIMENTAL DATA

Citation Formats

Kuzminski, M., Slawska-Waniewska, A., and Lachowicz, H.K. The influence of superparamagnetic particle size distribution and ferromagnetic phase on GMR in melt spun Cu-Co granular alloys. United States: N. p., 1999. Web. doi:10.1109/20.801003.
Kuzminski, M., Slawska-Waniewska, A., & Lachowicz, H.K. The influence of superparamagnetic particle size distribution and ferromagnetic phase on GMR in melt spun Cu-Co granular alloys. United States. doi:10.1109/20.801003.
Kuzminski, M., Slawska-Waniewska, A., and Lachowicz, H.K. Wed . "The influence of superparamagnetic particle size distribution and ferromagnetic phase on GMR in melt spun Cu-Co granular alloys". United States. doi:10.1109/20.801003.
@article{osti_20000656,
title = {The influence of superparamagnetic particle size distribution and ferromagnetic phase on GMR in melt spun Cu-Co granular alloys},
author = {Kuzminski, M. and Slawska-Waniewska, A. and Lachowicz, H.K.},
abstractNote = {Magnetic characteristics and structure of granular Cu{sub 90}Co{sub 10} alloy were investigated in order to explain their relationship with electric transport properties. The annealed sample contains mainly Co-particles with sizes of few nanometers and some much larger particles or agglomerations, which are not superparamagnetic. It is shown that the ferromagnetic phase contribution to the total magnetization (calculated applying the new, invented method) and differentiated surface to volume ratio of superparamagnetic particles are the main sources of the observed deviation of the magnetoresistance characteristics from that expected theoretically for superparamagnetic particles of equal size.},
doi = {10.1109/20.801003},
journal = {IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)},
issn = {0018-9464},
number = 5Pt1,
volume = 35,
place = {United States},
year = {1999},
month = {9}
}