摘要
采用熔盐焙烧法制得了不同掺杂浓度的Mn:MgAl_2O_4超细粉体,采用真空烧结法制得Mn:MgAl_2O_4透明陶瓷。通过紫外可见分光计、扫描电镜、荧光分光计等测试手段研究了可望用于可见波段的新型激光材料Mn:MgAl_2O_4透明陶瓷的光学透过率、微观形貌和光荧光特性。结果表明,通过简单的制备工艺可制得光学特性均一的Mn:MgAl_2O_4透明陶瓷,并且与单晶相比Mn:MgAl_2O_4透明陶瓷存在两条发光通道,一个中心在520nm附近很强的荧光峰,其强度随着掺杂浓度的增加而加强;一个是中心在690nm附近处微弱的荧光峰。这两条发光通道不是独立的,这与单晶是不相同的。
Mn：MgAl2O4 powders with different doping concentration were obtained by melt salt calcining. Transparent ceramic Mn：MgAl2O4 were prepared by vacuum sintering. The preparation of transparent Mn： MgAl2O4 ceramics with potential applications in the field of visible-band ceramic laser material and their light transmission, microstructure and photoluminescence properties were investigated by ultraviolet-visible spectrometer, scanning electron microscopy and fluorescence spectrometer, respectively. As a result, transparent Mn：MgAl2O4 ceramics were obtained by a simple method. Compared with single crystals, two channels of visible-band luminescence, one strong peak around centered at 520nm and one weak peak centered at 690 nm, respectively, can be shown. Unlike those of single crystals, the two channels are related.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A02期438-441,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50272040)
霍英东青年教师基金(91046)
四川省青年科技基金(03ZQ026-039)资助.
