Add time:08/08/2019         Source:sciencedirect.com

The thermal decomposition of crystalline europium hydroxide has been studied by dynamic (differential thermal analysis and thermogravimetry) and static (fourier transform infrared and high-resolution photoluminescence spectroscopies) methods. It was deduced that crystalline europium hydroxide was thermally stable up to 200 °C, and at 250 °C decomposed to europium hydroxide (existing in the monoclinic crystal form). The oxyhydroxide was thermally stable between 300 and 350 °C, but between 400 and 450 °C decomposed to europium sesquioxide. This phase of the oxide (denoted as the C-phase) was stable between 500 and 900 ° C, but above this temperature evidence was obtained from the luminescence data that conversion to the B-phase was possible.

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