Current Annealings and Magnetoimpedance in Co-Fe Amorphous Ribbons

• Authors: J. González , L. Domínguez , J.M. Blanco , P. Aragoneses , R. Valenzuela
• Languages of publication: EN

Abstracts

EN

Amorphous ribbons of composition (Co_{0.95}Fe_{0.05})_{100-x}Si_{0.4x} B_{0.6x}, with x=25 and 30 were prepared by the melt-spinning technique. Current annealings at 600 mA were performed for annealing times between 15 s and 60 min. The magnetoimpedance response was investigated by submitting the ribbons to ac currents at frequencies in the 10-200 kHz range, with amplitudes between 1 and 15 mA (rms), and measuring their voltage response. The observed results show that a transverse anisotropy is induced by the thermal treatments, which can be evaluated by means of the magnetoimpedance effect. Due to its lower Curie temperature, the x=30 ribbons exhibited lower sensibility to the current annealings.

Keywords

EN

75.60.Nt; 75.50.Kj

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 91
• Issue: 2
• Pages: 451-454

Dates

published

1997-02

Contributors

author

J. González

• Departmento de Fisica de Materiales, Universidad del Pais Vasco, P.O. Box 1072, 20080 San Sebastian, Spain

author

L. Domínguez

• Departmento de Fisica de Materiales, Universidad del Pais Vasco, P.O. Box 1072, 20080 San Sebastian, Spain

author

J.M. Blanco

• Departmento de Fisica de Materiales, Universidad del Pais Vasco, P.O. Box 1072, 20080 San Sebastian, Spain

author

P. Aragoneses

• Departmento de Fisica de Materiales, Universidad del Pais Vasco, P.O. Box 1072, 20080 San Sebastian, Spain

author

R. Valenzuela

• Instituto de Investigaciones en Materiales, National University of Mexico, P.O. Box 70-360, 04510 Mexico, Mexico