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Magnetostriction Versus Magnetization of Hiperco 50 From 20 $^circ$C to 700 $^circ$C

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2 Author(s)
B. E. Lorenz ; Dept. of Electr. Eng., Widener Univ., Chester, PA ; C. D. Graham

We report simultaneous measurement of magnetostriction and magnetization on strip samples of polycrystalline Hiperco 50 (49Fe 49Ni 2V, wt%) in fields of more than 300 Oe and over the temperature range from room temperature to 700degC. As a physical process, magnetostriction is clearly dependent on the state of magnetization of the sample, not on the applied magnetic field. From room temperature to about 500degC the magnetostrictive strain in Hiperco 50 is a quadratic function of the sample magnetization, and is only weakly dependent on temperature. Above 500degC, the maximum magnetostrictive strain drops fairly abruptly (as previously reported) from about 80 muepsiv to less than 30 muepsiv, and the shape of the strain versus magnetization plots changes shape, so that almost all the strain occurs near saturation magnetization

Published in:

IEEE Transactions on Magnetics  (Volume:42 ,  Issue: 12 )