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The superfine lanthanum hafnate powder was synthesized by the glycol-citrate method. The phase transitions and the changes of microstructure of the La2Hf2O7 sample were studied under different conditions of thermal treatment (973–1673 K, 2–4 h). The vaporization processes of La2Hf2O7 were established at temperatures 2297–2500 K by the high temperature mass spectrometric method. The thermodynamic properties...
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