Pasi pemutemo, makambani haafanire kunyora mazita emakemikari anoshandiswa kugadzira zvinonhuhwirira. "Isu sevatengi tine kodzero yekuziva zvatinoisa panyama," akadaro Sean Gray, muongorori mukuru weEnvironmental Working Group, akaita tsvakiridzo yemushandirapamwe wezvizoro zvakachengeteka. \"Mamwe makemikari akavanzika ausingazive anogona kukanganisa hutano hwevanhu.
Kuita kweichi chinyorwa chinogona kukwidziridzwa nekutsiva la nezvimwe zvinhu. Nekutsiva ce (Ce) For la, Fujita, etc. (2004)Inogona kuchinja entropy nekuwedzera kwemagnetism-30 J/kg. K musanganiswa we10% ceriumsubstitution. Fujieda et al. (2006) Bvudzi Remazuvano (Pr) Ye la, kana yakaitwa magineti kubva pa0 kusvika ku5 Tesla ichienzaniswa nezvinhu zvakafanana pasina kutsiva, shanduko ye entropy uye shanduko yetembiricha yakawedzera neinopfuura 30%.