Abstract
Sr-ferrite sintered magnets were prepared by the spark plasma sintering method. This method brought the densification of Sr-ferrite at relatively low processing temperature and a remarkable short processing time. From the comparison of the magnetic properties of Sr-ferrite magnets produced by spark plasma sintering method with those by the usual ceramics method, a larger magnetization and a larger coercivity were easily and simultaneously obtained in the spark plasma sintering process. It was likely that such improvement in magnetic properties might be attributed to the densification with effective suppression of the ferrite grain growth by the spark plasma sintering method.
