Magnetostrictive influence on the bistability of amorphous wires
- Department of Condensed Matter Physics, Royal Institute of Technology, Stockholm (Sweden)
We have studied the effect of tension and external field on the magnetization process in amorphous positive magnetostrictive Fe-Si-B wires. The radial stress created during the in-rotating water quenching technique of producing these wires causes a radial anisotropy. Using a simple phenomenological model which assumes a continuous distribution for the values of these radial stresses, we fit the observed values of the remanence as a function of the applied longitudinal stress and obtain information about the stress distribution. We also explain in a consistent manner the dependence of the magnetization process on the applied longitudinal stress. On doing so, a value of the saturation magnetostriction constant {lambda}{sub {ital s}}=28{times}10{sup {minus}6} is obtained for a Fe{sub 77.5}Si{sub 7.5}B{sub 15} amorphous wire. In the stress dependence of the nucleation field for the Barkhausen jump we observe a minimum. A quantitative explanation for this minimum is given.
- OSTI ID:
- 6713489
- Journal Information:
- Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 68:3; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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