Fluorite-Like Phases Based on Barium and Rare-Earth Fluorides

期刊论文
发表日期：

2024年5月1日

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P. P. Fedorov,
S. V. Volkov,
Y. A. Vaitieva,
A. A. Aleksandrov,
S. V. Kuznetsov,
V. A. Konyushkin

摘要

Abstract

Optically transparent single-crystal blocks are prepared by the fusion of a barium fluoride charge with yttrium and erbium fluorides using sodium fluoride as a flux. The crystal structures were solved and composition of the following phases were determined: Na_0.75Ba_1.26Er_1.99F_9.24 (cubic crystal system, \(Fm\bar{3}m\) space group, a = 11.4192(4) Å), Na_0.25BaY_2.75F_10.5 (cubic crystal system, \(Fm\bar{3}m\) space group, a = 11.4350(19) Å), Na_0.05Ba_0.9Y_1.05F₅ (orthorhombic crystal system, Cmmm space group, a = 5.7205(5) Å, b = 17.2348(11) Å, c = 5.7648 (4) Å).