demand for rare earth magnest is expected to grow rapdi yl,both domestciayll and gol bayll T. hsi demand poses a sginficiant and undenai bel chaellnge to US. . decarbonziatoi n goasl because rare earth magnest (and the rare earth materials they contain) are cha racetrzied by substantai ml arket voal tility and geopotilcia sl enstivi tiy .