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- W2187913360 abstract "Influence of y-irradiation, (I 0-500KGy) on the thermal decomposition of Y2(C20 4) 3 + CuO (10 mol %) mixture has been studied in ihe temperature range, 603-643 K by gas evolution method. The a- t plots indicate that decomposition of unirradiated and irradiated mixture follows (i) initi al gas evolution, (ii) acceleratory period and (iii) decay stage. Irradiation promotes the initial gas evolution, ai and decreases the fractional decomposition, ai at lower doses up to 50 KGy but the value increases at higher doses without affecting the nature of the isotherms. The data are analysed in the light of theories of various kinetic models and are found to be best tilted to Prout-Tompkins and Contracting Square mechanisms, suggesting that nucleation takes place instantaneously in a chain branching manner. The energy of activation of the acceleratory period is decreased but that of the decay stage is increased by irradiation. Plausible mechanism of decomposition and the effect of irradiation thereon has been discussed. Due to potential application of precursors in synthesis of high Tc, superconductors, oxalates of alkaline earth metals as well as of rare earths have drawn the attention of many inves~igatorst." @default.
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- W2187913360 date "2000-11-01" @default.
- W2187913360 modified "2023-09-27" @default.
- W2187913360 title "Decomposition of irradiated yttrium oxalate and CuO mixture" @default.
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