DepartmentofAppliedPhysics;
TheHubeiProvinceKeyLaboratoryofRefractionsandCeramies-Ministry-ProvinceJointly-ConstructedCultivationBaseforStateKeyLaboratory;
WuhanUniversityofScienceandTechnology;
Wuhan430081;
China;
DepartmentofMaterialsScienceandEngineering;
IbarakiUniversity;
Nakananusawa;
Hitachi316-8511;
Japan;