Magnetostriction Measurements of (Fe-Co)-Mo-Cu-B Alloys with Varying Atomic Fe/Co Ratio

• Authors: G. Vlasák , D. Janičkovič , P. Švec
• Languages of publication: EN

Abstracts

EN

Amorphous rapidly quenched ribbons of (Fe-Co)_{76}Mo_8Cu_1B_{15} with the ratio Co/Fe = 0, 1/9, 1/6, 1/4, 1/3, 1/2, 1/1 and 2/1 were prepared by planar flow casting. The dependence of the Curie temperature T_C on Co/Fe ratio was determined. Due to the presence of the invar effect it was possible to measure the spontaneous volume magnetostriction in the temperature interval between 300 K and T_C. Field dependences of magnetostriction in parallel and perpendicular directions of applied magnetic field were obtained by direct measurement method. Subsequently, saturation magnetostriction and volume magnetostriction as well as forced magnetostriction were computed. Saturation magnetostriction increases with increasing Co/Fe ratio from 0 up to 17 ppm, depending both on the Co/Fe ratio and on the shift of T_C with composition. The alloy with ratio Co/Fe = 0 exhibits T_C near room temperature, thus field dependences of magnetostriction, corresponding to the dependences of a paramagnetic system are practically linear functions of applied field, corresponding to paramagnetic state.

Keywords

EN

75.50.Kj; 75.80.+q

Discipline

• 75.50.Kj: Amorphous and quasicrystalline magnetic materials
• 75.80.+q: Magnetomechanical effects, magnetostriction(for magnetostrictive devices, see 85.70.Ec)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 107-110

Dates

published

2008-01

received

2007-07-09

Contributors

author

G. Vlasák

• Institute of Physics, SAS, 845 11 Bratislava, Slovakia

author

D. Janičkovič

• Institute of Physics, SAS, 845 11 Bratislava, Slovakia

author

P. Švec

• Institute of Physics, SAS, 845 11 Bratislava, Slovakia

References

• 1. E. Tremolet de Lacheisserie, J. Magn. Magn. Mater. 31-36, 1491 (1983)
• 2. G. Vlasák, J. Magn. Magn. Mater. 215-216, 479 (2000)
• 3. G. Vlasák, P. Duhaj, H. Patrasova, P. Svec, J. Phys. E, Sci. Instrum. 16, 1203 (1983)
• 4. G. Vlasák, P.Švec, J. Electrical Eng. 55, 81 (2004)
• 5. A. Kolano-Burian, T. Kulik, G. Vlasák, J. Ferenc, L.K. Varga, J. Magn. Magn. Mater. 272-276, 1447 (2004)
• 6. G. Vlasák, P.Švec, D. Janičkovič, Czech. J. Phys. 54, D181 (2004)

Identifiers

DOI

10.12693/APhysPolA.113.107