Temperature Compensation in the ´2:17´ type magnets

Compensation for the temperature dependence of magnetic flux has been investigated in the ´2:17´ type permanent magnet alloys. A computer assisted composition selection procedure was adapted and one of the identified compositions, Sm1.18Dy.81Gd.01Co9.76Fe4.19Cu.83Zr.34, was processed into magnets. The measured temperature coefficients correlated satisfactorily with the prediction. Dysprosium was found to be a better substituent for Sm than either Gd or Er in providing temperature coefficient of linearity.