... blocks.USAGE:Used in atomic energy industry, as additive in permanent magnetic material, non-ferrous alloys.PACKING:Steel drum: 5kgs or ... lanthanum, low iron, low magnesium mixed rare earth alloy, magnetic materials, phosphors, flint and so on products new material industrial ... the field of high-tech. they are used in manufacturing magnetic resonance imaging device, the CT machine, computer hard drive, ...