Photoluminescence of the manganese ions on Mg₂Si₂O₆-Mg₂SiO₄ compounds

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• 作者：P.N. Chiara^a ; S.S. Pedro^a ; A. Ló ; pez^a ; I.C.S. Carvalho^b ; L.P. Sosman^a ; ^{sosman@uerj.br}
• 关键词：Ceramics ; X-ray diffraction ; Photoluminescence ; Mn2+ ; Mn4+
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：182
• 期：Complete
• 页码：39-44
• 全文大小：1149 K
• 卷排序：182

文摘

The MgO-SiO2 system with small quantities of MnCO3 was produced by solid-state reaction at high temperature. The crystallographic phases and the amounts of components were determined by X-ray diffraction measurements. Emission and excitation spectra of samples with Mn replacing 1% and 5% of Mg in mass were obtained at room temperature. The photoluminescence spectra showed a broad band between 580 nm and 800 nm assigned to transitions of Mn2+ in octahedral sites and a narrow emission at 610 nm, overlapped to the broad band, attributed to Mn4+ ions in octahedral sites.