Solid State Physics,Solid State Chem-istry and New Materials269 Spectroscopic properties of the Mn<sup>2+</sup> dopedCeMgAl<sub>11</sub>O<sub>19</sub>-SrAl<sub>
The Baotou iron-Steel and Rare Earth Co. is located in Baotou of the AutonomousRegion of Inner Mongolia, where China has her largest mineral reserves of rare ea