ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper, transparent ceramics Mn:MgAl2O4, which are potentially applicable in visiblebandlaser field, were prepared and their light transmission and photoluminescence properties wereinvestigated. In experiment, Mn:MgAl2O4 powders with two kinds of doping concentrations of 0.5 and1.0 at% were synthesized through a high-temperature calcination method with NH4Al(SO4)2·12H2O andMgSO4·7H2O as raw materials, and with MnSO4·H2O as dopant. Transparent ceramics Mn:MgAl2O4were prepared through vacuum hot-pressing sintering at 1750oC for 1 h, and subsequent vacuumannealingat 1700oC for 2 h. The samples were measured by means of light transmission and photoluminescence.The results show that transparent ceramics Mn:MgAl2O4 can be prepared by a low-cost powdertechnique and vacuum hot-pressing sintering. Two channels of visible-band luminescence, one peakaround 520nm and one wideband centered at 650nm, respectively, can be shown. The intensity of theirluminescence increases with increasing doping concentration. Obviously, it possesses a potentialapplication in the field of visible-band solid tunable laser material with high doping concentration
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1229.pdf
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