I-L Series 2:17 i-samarium cobalt uzibuthe isetshenziswa kabanzi kwezokundiza, Zasolwandle, ezokwelashwa, ezezimoto nezinye izimboni ngenxa ye-coefficient yayo yokushisa kazibuthe ephansi.I-Br ne-BH(Max) ye-L Series ishintsha kancane ngokukhuphuka kwezinga lokushisa.Njengamanje, singakhiqiza odonsa be-L22 ekukhiqizeni okuzinzile nokukhulu nge-Br≥9.5kGs, α(20-60℃) ngaphakathi kwe-100ppm.