| Autor: |
L. Kraus, V. Haslar, M.R.J. Gibbs, Del Atkinson, P.T. Squire, K. Zaveta |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Journal of Magnetism and Magnetic Materials. 153:63-74 |
| ISSN: |
0304-8853 |
| Popis: |
The hard ribbon axis anisotropy induced in the magnetostrictive amorphous alloy Fe 74.7 Nb 3 Si 12.8 B 9.5 by stress annealing at temperatures 633–693 K and under tensile stresses up to 204 MPa has been studied by several experimental methods (measurement of dc hysteresis loops, field dependence of engineering magnetostriction λ e and Young's modulus E , and domain structure observations). The experimental data are discussed in terms of the phenomenological model developed earlier by Squire. The most significant improvement in the magnetoelastic response was found for the highest annealing temperature T a = 693 K. The maximum ΔE effect (27%) observed is much lower than the maximum estimated theoretical value (87%). The λ e and domain studies suggest that this difference is most probably due to the dispersion of easy axes and/or anisotropy values. Even though the phenomenological model does not take into account local variations in the anisotropy, it gives a reasonable quantitative description of a slightly perturbed hard ribbon axis case. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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