New Samarium-2 Cobalt-17-Based Compounds for Permanent Magnet Applications.

Abstract : The magnetic properties of several samarium-2 cobalt-17-based alloy systems potentially useful for microwave/millimeter-wave applications are reviewed. Two types of materials are discussed. One contains heavy rare earth substituents for some samarium in an attempt to achieve intrinsically temperature stabilized magnets. The other contains manganese or chromium substituents for some cobalt in the samarium-2(cobalt, iron, copper, zirconium)-17 type compound in an effort to enhance the coercivity and to attain a more linear demagnetization curve for this material, which already has an energy product of 30 megagauss oersteds. (Author)