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Simultaneous observation of Barkhausen pulses and jumps in resistance fluctuations in ferromagnetic materials

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1 Author(s)
Lopez, R. J. ; Departamento de Fisica de Materia Condensada, Universidad de Cantabria, Santander, Spain 39005

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1149560 

An experimental setup which simultaneously registers induced Barkhausen pulses and short time variations in electrical resistance has been developed. The skin effect associated with the use of an alternating current of 100 kHz reduces the volume of the sample which is sensitive to the passing of the current, making it possible to detect the rapid modifications in resistance in a standard Ni thermocouple wire subjected to a slowly varying magnetic field. The combination of both techniques clearly shows the association between jumps in resistance and the dynamics of some magnetic domains. © 1999 American Institute of Physics.

Published in:

Review of Scientific Instruments  (Volume:70 ,  Issue: 1 )

Date of Publication:

Jan 1999

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