Crystal growth of LiF/LiYF₄ eutectic crystals and their luminescent properties

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• 作者：Kei Nishimoto^a ; ^{nishimotokei0909@imr.tohoku.ac.jp" class="auth_mail} ; Yuui Yokota^a ; Shunsuke Kurosawa^a ; Yutaka Fujimoto^a ; Noriaki Kawaguchi^c ; Kentaro Fukuda^a ; Akira Yoshikawa^a ; ^b
• 关键词：LiF&ndash ; LiYF4 eutectic crystals ; Scintillator ; Eutectic ; Light-guide ; Rod-like
• 刊名：Journal of the European Ceramic Society
• 出版年：August, 2014
• 年：2014
• 卷：34
• 期：9
• 页码：2117-2121
• 全文大小：1636 K

文摘

Undoped and 0.5 mol% Ce-doped LiF-LiYF₄ eutectic crystals were grown by the micro-pulling-down method at different growth rates. The SEM images of all the eutectic crystals showed LiF with rod-like structure in the LiYF₄ matrix. The diameter of the rod phase systematically decreased with the increase of the growth rate. The radioluminescence spectra of cerium doped crystal under alpha-ray excitation showed emission peak at 325 nm related to Ce³⁺ 5d-4f transition. The white part in the cathodoluminescence image is considered to be due to Ce³⁺ ion in LiYF₄ phase, according to the scanning electron microscopy (SEM) image in the same region.