Thermal Stability and Performance Data for SmCo 2:17 High-Temperature Magnets on PPM Focusing Structures

Effect of Stabilization Heat Treatment on Time-Dependent Polarization Losses in Sintered Nd-Fe-B Permanent Magnets

“…The remanence of the magnets was reduced proportionally during the stabilization treatment. In [3], the time-dependent demagnetization of SmCo magnets within a three-year measurement period was found to decrease to about 0.3 % due the two-hour pre-ageing treatment.…”

“…The effects of stabilization heat treatment on SmCo based magnets have been studied previously [2][3]. As long as the stabilization treatment is performed at moderate temperatures, the effects are purely due to domain wall motion and a stabilizing effect is attained [2].…”

Single crystal growth and magnetic properties of 2:17-type SmCo magnets

“…2:17-type SmCo magnets are suggested to be the best available high temperature magnets because of their strong magnetocrystalline anisotropy, high Curie temperature, and large maximum energy product (BH) max [6][7][8].…”

Phase constitution, evolution and correlation with magnetic performance in nominal SmCo9.8 alloy

“…For example, microwave tubes, gyroscopes and accelerometers, reaction and momentum wheels to control and stabilize satellites, magnetic bearings, sensors and actuators require that the permanent magnets have not only high-energy density but also a wide operating temperature range [4,5]. Presently, the commercial SmCo 5 -and Sm 2 Co 17 -type magnets can hardly satisfy the above requirements with their highest serviceability temperature as only 300°C [6,7]. Therefore, efforts have been focused on exploring new type Sm-Co alloys that can be applied at higher temperatures with good magnetic performance (e.g.…”