The invention relates to
barium magnesium niobate light-emitting ceramics and a preparation method thereof.The formula of the
barium magnesium niobate light-emitting ceramics is Ba(1-x)Smx(Sn0.1Mg0.3Mg0.3Nb0.6)O3, wherein 0.005< / =x< / =0.03.The preparation method includes the steps of firstly, performing ball milling on a
barium-source compound, a
samarium-source compound, a
magnesium-source compound, a
tin-source compound and a
niobium-source compound according to the weight requirements of the formula, then
sintering under 1300-1350 DEG C to obtain products, and performing secondary ball milling on the products to obtain
ceramic powder; secondly, adding a
polyvinyl alcohol aqueous solution into the
ceramic powder for pelleting, aging, crushing to obtain
ceramic particles, forming the ceramic particles to obtain ceramic bodies, and preparing the ceramic bodies into even-pressure ceramic bodies through isostatic cool pressing; thirdly,
sintering the even-pressure ceramic bodies under
oxygen atmosphere after the even-pressure ceramic bodies
discharge glue, cooling along with a furnace, and coarsely
polishing and finely
polishing to obtain the barium
magnesium niobate light-emitting ceramics, wherein
sintering temperature is 1500-1600 DEG C, and the temperature is kept for 48-60 hours.The barium
magnesium niobate light-emitting ceramics have the advantages that the
crystal boundary of the ceramics has no
impurity phases, and the ceramics are good in compactness, even in grain size, high in
chemical stability, and good in physical performances such as
compressive strength; the ceramics have evident absorption peak in the visible light range, the
quenching concentration can reach 2%mol, and high light-emitting intensity is achieved.