Facile synthesis of LaAlO3 and Eu(II)-doped LaAlO3 powders by a solid-state reaction
Source abstract
Abstract
Abstract Lanthanum aluminate (LaAlO 3 ) powder was prepared by a solid-state reaction between lanthanum(III) carbonate fluoride (LaFCO 3 ) and alumina (Al 2 O 3 ) powders at elevated temperatures, and characterized by powder X-ray diffraction (XRD), 27 Al magic-angle spinning nuclear magnetic resonance spectroscopy, and scanning electron microscopy. The formation temperature (1000 °C) of LaAlO 3 was much lower than that in other solid-state reactions. The Eu(II)-doped LaAlO 3 powder was prepared by calcination of a mixture of Eu(III)-doped LaFCO 3 and Al 2 O 3 in a nitrogen atmosphere and characterized by powder XRD, and photoluminescence and X-ray photoelectron spectroscopy. The intensity of blue emission due to Eu(II) ions in the LaAlO 3 powder increased with increasing calcination temperature up to 1200 °C but decreased with further increases in temperature. The origin of the Eu(II) ions was explained by the thermal decomposition of EuF 3 .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Nuclear materials and radiation effects · Microwave Dielectric Ceramics Synthesis
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