Low Temperature Solid-State Synthesis and Characterization of LaBO3

Azmi Seyhun KIPÇAK
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Rare earth (lanthanide series) borates, possess high vacuum ultraviolet (VUV) transparency, large electronic band gaps, chemical and environmental stability and exceptionally large optical damage thresholds and used in the development of plasma display panels (PDPs). In this study the synthesis of lanthanum borates via solid-state method is studied. For this purpose, lanthanum oxide (La2O3) and boric acid (H3BO3) are used for as lanthanum and boron sources, respectively. Different elemental molar ratios of La to B (between 3:1 to 1:6 as La2O3:H3BO3) were reacted by solid-state method at the reaction temperatures between 500°C - 700°C with the constant reaction time of 4 h. Following the synthesis, characterizations of the synthesized products are conducted by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy and scanning electron microscope (SEM). From the results of the experiments, three types of lanthanum borates of; La3BO6, LaBO3 and La(BO2)3 were observed at different reaction parameters. Among these three types of lanthanum borates LaBO3 phase were obtained as a major phase.


lanthanide; borates; lanthanum borates; solid-state; XRD; SEM

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DOI: http://dx.doi.org/10.17482/uujfe.91099


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