The invention discloses a hafnate
luminescent material which has the general formula of Y2-xHf7O17:Eux, wherein, X is 0.01-0.3; the invention also discloses a method for preparing the hafnate
luminescent material, which comprises the steps:
solid yttrium nitrate and hafnyl
chloride are put into a container by taking the mol ratio of 3:25-3:10 as the mixture ratio and dissolved by
distilled water; Eu(NO3)3 solution is added into the mixture, and the
molar weight of Eu is 1%-30% of the
molar weight of Y; the pH value of the solution is regulated to be 1 by using
nitric acid; the blended fuel of
glycin and
urea is added into the solution, and
ethylenediamine tetracetic acid (EDTA) having the
mass accounting for millesimal of the total
mass of the
raw material is taken as chelating agent and added into the solution; the mixture is burnt in a furnace at the temperature of 450 DEG C to obtain precursor, and then sintered for 2 hours at 800 DEG C in a high temperature furnace, thereby obtaining the Y2-xHf7O17:Eux material. The material obtained by the invention can be used in an X-
ray intensifying screen of high-energy
physics, medical use or safety inspection. The preparing method has the advantages of safety, time-saving, energy-efficiency, etc.