neodymium alloy

…number of ferrous and nonferrous alloys, among them misch metal (15 percent neodymium), used for lighter flints. The metal itself—and as an alloy with another lanthanide, erbium—has been employed as a regenerator in low-temperature cryocooler applications to provide cooling down to 4.2 K (−269 °C, or −452 °F). Its compounds…