Hariho ibintu cumi na birindwi bidasanzwe byisi - cumi na bitanu muri byo ni lanthanide na bibiri muri byo ni ibyuma byinzibacyuho, yttrium na scandium - biboneka hamwe na lanthanide kandi bisa na chimique. Samariyumu (Sm) na Neodymium (Nd) nibintu bibiri bikoreshwa cyane mubutaka budasanzwe mubikorwa bya magneti. By'umwihariko, Samariyumu na Neodymium ni ibintu bidasanzwe by'isi bidasanzwe (KUBUNTU) mu itsinda rya cerium. Samarium Cobalt na Neodymium alloy magnet itanga bimwe mubipimo byiza-by-uburemere kubikorwa byinganda nubucuruzi.

Ibintu bidasanzwe byisi biboneka hamwe mubutare bumwe, kandi ibyo bibitse ni byinshi. Usibye promethium, ntanimwe mubintu bidasanzwe byisi bidasanzwe. Kurugero, samariyumu nikintu cya 40 cyinshi kiboneka mubutaka bwisi. Neodymium, kimwe nibindi bintu bidasanzwe byisi, bibaho mumabuye mato mato. Nyamara, iyi si idasanzwe yisi irasa nkumuringa kandi ni mwinshi kuruta zahabu.

Muri rusange, ibintu bidasanzwe byisi byahawe izina ryimpamvu ebyiri zitandukanye, ariko zikomeye. Izina rya mbere rishoboka ryo kwita izina rishingiye kubintu byambere bigaragara ko ari bike mubintu cumi na birindwi bidasanzwe byisi. Icya kabiri cyatanzwe na etymologiya gikomoka kubikorwa bigoye byo gutandukanya buri kintu kidasanzwe cyisi nubutare bwacyo.

Neodymium Ntibisanzwe Isi Magnet SquareIbintu bito kandi bigoye kubona ubutare burimo ibintu bidasanzwe byubutaka byagize uruhare mukwitirirwa izina ryibintu cumi na birindwi. Ijambo "isi" ryerekeza gusa kubutaka busanzwe buboneka. Ubuke bwamateka yibi bintu byatumye izina ryayo byanze bikunze. Kugeza ubu, Ubushinwa bujuje hafi 95% by’ibikenerwa ku isi ku isi idasanzwe - ubucukuzi bw'amabuye y'agaciro no gutunganya toni zigera ku 100.000 z'ubutaka budasanzwe ku mwaka. Amerika, Afuganisitani, Ositaraliya, n'Ubuyapani nabyo bifite ubutaka budasanzwe.

Ibisobanuro bya kabiri kubintu bidasanzwe byubutaka byiswe "isi idasanzwe" byatewe ningorabahizi haba mubikorwa byo gucukura no gutunganya, ubusanzwe byakorwaga na kristu. Ijambo "imbonekarimwe" risobanura amateka "bigoye." Kubera ko ubucukuzi bwabo no gutunganya butari bworoshye, abahanga bamwe bavuga ko ijambo "isi idasanzwe" ryakoreshejwe kuri ibyo bintu cumi na birindwi.

Magari ya Samarium CobaltSamariyumu Cobalt Ntibisanzwe Isi Magneti na Neodymium rukuruzi zidasanzwe zisi ntabwo zihenze cyane cyangwa ntizihagije. Akarango kabo nka "isi idasanzwe" magneti ntigomba kuba impamvu yambere yo guhitamo cyangwa kugabanya izo magneti mubikorwa byinganda cyangwa ubucuruzi. Ibishobora gukoreshwa muri imwe muri izo magneti bigomba gupimwa neza ukurikije imikoreshereze yabigenewe, kandi ukurikije ibihinduka nko kwihanganira ubushyuhe. Kwita magnesi nk "isi idasanzwe" binemerera gutondekanya muri rusange magneti ya SmCo na Neo magnet hamwe hamwe iyo bivuzwe hamwe na magneti gakondo ya Alnico cyangwa Ferrite.