Piezomagnetic Dependences on Magnetic Bias Field of Annealed at 450°C Fe-Cu-Nb-Si-B Alloy |
| Z. Kaczkowski, E. Milewska Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland P. Duhaj and G. Vlasák Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, 842 28 Bratislava, Slovakia |
| Full Text PDF |
| Magnetic field dependences of the piezomagnetic dynamics, magnetomechanical coupling and elasticity moduli in the Fe73.5Cu1Nb3 Si13.5B9 alloy in an as-quenched state and annealed in vacuum for 1 h at 450°C were investigated. The maximum value of the magnetomechanical coupling coefficient was equal to 0.15 for the as-quenched state and 0.7 after annealing at 450°C. The changes of the elasticity moduli (ΔE effect) from about 60 to 180 GPa were observed after annealing at this temperature. These changes are connected with magnetostriction (equal to 25.8×10-6 at saturation), internal stresses, defects, mechanical, magnetic and heat treatment history. |
| DOI: 10.12693/APhysPolA.91.487 PACS numbers: 75.80.+q, 75.60.Nt, 75.60.Ch |