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Electrical Resistivity and Magnetoresistance of the δ-FeZn10 Complex Intermetallic Phase

Published online by Cambridge University Press:  01 February 2013

P. Koželj ,
S. Jazbec  and
J. Dolinšek
P. Koželj
Affiliation:
J. Stefan Institute, University of Ljubljana, Jamova 39, SI-1000 Ljubljana, Slovenia.
S. Jazbec
Affiliation:
J. Stefan Institute, University of Ljubljana, Jamova 39, SI-1000 Ljubljana, Slovenia.
J. Dolinšek
Affiliation:
J. Stefan Institute, University of Ljubljana, Jamova 39, SI-1000 Ljubljana, Slovenia.
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Abstract

The δ-FeZn10 phase possesses high structural complexity typical of complex metallic alloys: a giant unit cell comprising 556 atoms, polyhedral atomic order with icosahedrally-coordinated environments, fractionally occupied lattice sites and statistically disordered atomic clusters that introduce intrinsic disorder into the structure. The electrical resistivity is large and exhibits a maximum at about 220 K. The magnetoresistance is sizeable, amounting to 1.5 % at 2 K in 9 T field. The temperature–dependent resistivity is discussed within the frame of the theory of slow charge carriers, applicable to metallic systems with weak dispersion of the electronic bands, where the electron motion changes from ballistic to diffusive upon heating. A comparison to the theory of weak localization is also made.

Keywords

electrical propertiesmagnetoresistance (magnetic)alloy
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1517: Symposium KK – Complex Metallic Alloys , 2013 , mrsf12-1517-kk04-06
Copyright
Copyright © Materials Research Society 2013

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References

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