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Yellow fluorescence from baghdadite and synthetic Ca3(Zr,Ti)Si2O9

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Abstract

Baghdadite from Fuka, Okayama Prefecture, Japan shows a bright yellow fluorescence under UV (Hg 253.7 nm) excitation. The photoluminescence (PL) spectrum at 300 K consists of one large band near 580 nm and two small UV bands at 318 and 397 nm. The optical excitation spectrum of the bright yellow fluorescence consists of two bands near 220 and 250 nm. The temperature dependence of the PL intensity exhibits linear thermal quenching. To reveal the origin of the bright yellow fluorescence from baghdadite, powder Ca3(Zr,Ti)Si2O9 crystals are synthesized. Synthetic Ca3(Zr,Ti)Si2O9 shows luminescence spectra similar to those of baghdadite, and the intensity of the yellow fluorescence is markedly increased by titanium addition. The origin of the bright yellow fluorescence from baghdadite is ascribed to the existence of titanium.

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Acknowledgements

The authors thank Mr. Takuya Hamada and Mr. Yoshitaka Satoh of Futaba Corporation, Japan for synthesizing the Ca3(Zr,Ti)Si2O9 compounds. The analysis of the contents of trace elements in baghdadite was carried out at the Satellite Venture Business Laboratory (SVBL) in Okayama University. The authors are also grateful to members of SVBL for performing the ICP-MS analysis. They also wish to thank Dr. Masanori Kurosawa, University of Tsukuba, for helpful suggestions regarding this paper.

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Correspondence to I. Kusachi.

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Aierken Sidike, Kusachi, I. & Yamashita, N. Yellow fluorescence from baghdadite and synthetic Ca3(Zr,Ti)Si2O9 . Phys Chem Minerals 32, 665–669 (2006). https://doi.org/10.1007/s00269-005-0028-z

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  • DOI: https://doi.org/10.1007/s00269-005-0028-z

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