FIELD: ceramics. SUBSTANCE: source of matrix: phosphates involving except for cesium titanium (IV) and iron (III). To decrease temperature and time of synthesis of matrix oxalate compounds of iron and titanium are used as iron- and titanium-containing components. Invention ensures to obtain high cesium concentration and low leachability. EFFECT: increased concentration of fixed cesium, diminished temperature and time of caking. 2 cl
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