shi arewa pole ana siffanta shi da sandar maganadisu wadda idan ba ta iya jujjuyawa sai ta nemi igiyar arewa ta duniya.Ma'ana, igiyar arewa ta magnet zai nemi sandar arewa ta duniya.Hakazalika, sandan kudu na magnet yana neman kudancin duniya.
Ana yin maganadisu na dindindin na zamani da gawa na musamman waɗanda aka samo ta hanyar bincike don ƙirƙirar ƙaƙƙarfan maganadisu.Mafi yawan iyalai na kayan maganadisu na dindindin a yau an yi su ne daga aluminum-nickel-cobalt (alnicos), strontium-iron (ferrites, kuma aka sani da yumbu), neodymium-iron-boron (aka neodymium maganadisu, ko "super magnets") , da samarium-cobalt-magnet-material.(Iyalan samarium-cobalt da neodymium-iron-boron ana kiransu gaba ɗaya a matsayin rare-earths).
Mayar da hankali kan samar da mafita na maganadisu na shekaru 30