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Description:

Single phase NaLuO2, which crystallizes in the ¡-NaFeO2-type structure (trigonal, space group R-3m), was synthesized by heating a mixture of Na2O and Lu2O3 at 1150 °C. The crystal structure of this oxide was analyzed using the Rietveld method for the powder X-ray diffraction pattern, and the oxygen atom coordinate [z = 0.2397(3)] was refined. Mixtures of NaLuO2 and europium monoxide with a composition NaLuO2–xEuO (x = 0.0, 0.01, 0.1, 1.0 mol %) were heated at 900 °C for 12 h in a N2 atmosphere. The obtained samples were Eu2+ and Eu3+-doped NaLuO2 with trace amounts of Lu2O3. The emission spectrum peak due to the 5d 1⁄4 4f transition of Eu2+ occurred at a wavelength of 617 nm under the excitation of a 442 nm blue light, and the full width at half maximum of the spectrum was 80 nm. Intense emission peaks due to the f-f transition of Eu3+ were observed at approximately 590 nm when excited by a 230 nm ultraviolet light.

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• Creative Commons BY Attribution 4.0 International
  

Keyword: Solid state reaction, Ternary oxide, Powder X-ray diffraction, Rietveld analysis, Photoluminescence, Eu2+ and Eu3+ emission center

Date published: 2025-07-01

Publisher: Ceramic Society of Japan

Journal:

• Journal of the Ceramic Society of Japan (ISSN: 13486535) vol. 133 issue. 7 25048

Funding:

• JST JPMJCR19J2
• ATLA JPJ004596

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.2109/jcersj2.25048

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Updated at: 2025-12-05 12:30:12 +0900

Published on MDR: 2025-12-05 12:23:27 +0900