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The temperature dependence of hysteretic processes in Co nanowires arrays
Author(s) -
Iordana Aştefãnoaei,
Ioan Dumitru,
Andrei Diaconu,
Leonard Spînu,
Alexandru Stancu
Publication year - 2008
Publication title -
journal of applied physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.699
H-Index - 319
eISSN - 1089-7550
pISSN - 0021-8979
DOI - 10.1063/1.2837500
Subject(s) - nanowire , materials science , anisotropy , condensed matter physics , thermal , hysteresis , thermal hysteresis , nanopore , magnetic field , nanotechnology , thermodynamics , optics , physics , quantum mechanics , phase transition
In this paper, the temperature dependence of the hysteretic processes of Co nanowires, squarelly ordered in an array prepared by electrodeposition in nanopores of alumina membranes was analyzed. Both the magnetostatic interactions induced in the nanowires arrays and the thermal stresses radial, azimuthal and axial stresses, which appear during the cooling of the system nanowire and alumina template from room temperature to 3 K was evaluated. The analysis of thermal induced stresses provides useful informations concerning the magnetic anisotropy in the Co nanowires. The temperature dependence of the remanent magnetization and coercitive field as an effect of the induced thermal stresses and magnetostatic interactions between nanowires was studied. © 2008 American Institute of Physics. DOI: 10.1063/1.2837500

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