NationalEngineeringResearchCenterforRareEarthMaterials;
GeneralResearchInstituteforNonferrousMetals;
GRIREMAdvancedMaterialsCo.Ltd.Beijing100088;
China;
InstituteofOptoelectronicTechnology;
LaboratoryofMaterialforInformationStorageandDisplay;
BeijingJiaotongUniversity;
Beijing100044;
China;