Magnetic and transport properties of Fe-rich thin cold-drawn amorphous wires
Abstract
Electrical resistivity, magnetic (saturation magnetization and switching field of the magnetic bistability) and magnetoimpedance measurements are reported in cold-drawn amorphous Fe77.5B15Si7.5 thin wires of 14 mu m diameter. Such measurements have been performed in the thin wire treated by current annealing. Electrical resistivity dependence with the intensity of the current flowing along the thin wire shows a deep decrease around 70 mA ascribed to the crystallization process. Dependence curve of the magnetization with the intensity of the current presents a change of slope at 40 mA which is ascribed to the nucleation of grains. Unusual dependence of switching field on applied stress exhibits a decrease of the switching field with the external stress in the as-prepared cold-drawn and post-treated thin wire. Magnetoimpedance ratio evolves from one to two peaks response increasing the frequency. Observed dependences interpreted taking into account strong internal stresses induced by the cold-drawn process. (C) 2009 Published by Elsevier B.V.
Más información
Título según WOS: | ID WOS:000273709600011 Not found in local WOS DB |
Título de la Revista: | JOURNAL OF ALLOYS AND COMPOUNDS |
Volumen: | 488 |
Número: | 1 |
Editorial: | ELSEVIER SCIENCE SA |
Fecha de publicación: | 2009 |
Página de inicio: | 5 |
Página final: | 8 |
DOI: |
10.1016/j.jallcom.2008.05.111 |
Notas: | ISI |