FIELD: solid-phase synthesis of super-pure polycrystalline lead tungstate PbWO4; growing monocrystals of lead tungstate.
SUBSTANCE: proposed method includes mixing equivalent amounts of tungsten oxide WO3 and lead nitrate followed by heat treatment of mixture at temperature of 700-750°C continued for 1.5-2.0 h. Use may be made of tungsten oxide and lead nitrate of super-pure grades; lead nitrate is ground preliminarily to size of particles no less than 10 mcm. Proposed method makes it possible to obtain polycrystalline single-phase lead tungstate PbWO4 at minimum content of sodium admixture.
EFFECT: enhanced efficiency.
4 cl, 3 ex
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