The EuBO₃–ScBO₃ system was investigated by solid state synthesis and DSC methods. In this system, a new EuSc(BO₃)₂ compound was found. It crystallizes in the R space group with unit cell parameters of a = 4.8939(1) Å and c = 16.2663(5) Å. Whereas another compound in the system EuSc₃(BO₃)₄ possesses two modifications: a low-temperature α-C2/c (a = 7.687(1) Å, b = 9.810(2) Å, c = 12.021(2) Å, and β = 105.379(4)°) and a high-temperature β-R32 (a = 9.7473(1) Å and c = 7.9205(2) Å). The α-EuSc₃(BO₃)₄ crystal was grown with LiBO₂–LiF flux, and β-EuSc₃(BO₃)₄ was obtained by the solid state synthesis. All of the obtained crystals exhibited typical Eu³⁺ luminescence spectra with peaks at 589 nm, 596 nm, 615 nm, 657 nm and 689 nm, which corresponded to the ⁵D₀ → ⁷F_J (J = 0, 1, 2 and 4) electron transitions. The strongest peak of luminescence was located at 615 nm and corresponded to the ⁵D₀ → ⁷F₀ transition.

中文翻译：

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EuBO3-ScBO3 系统和 EuSc3(BO3)4、EuSc(BO3)2 原硼酸盐的研究

通过固态合成和DSC方法研究了EuBO ₃ –ScBO ₃系统。在该系统中，发现了一种新的 EuSc(BO ₃ ) ₂化合物。它在R空间群中结晶，晶胞参数为a = 4.8939(1) Å 和c = 16.2663(5) Å。而系统 EuSc ₃ (BO ₃ ) ₄中的另一种化合物具有两个变体：低温α- C 2/ c ( a = 7.687(1) Å, b = 9.810(2) Å, c = 12.021(2) Å 和β= 105.379(4)°) 和高温 β- R 32 ( a = 9.7473(1) Å 和c = 7.9205(2) Å)。α-EuSc ₃ (BO ₃ ) ₄晶体用LiBO ₂ -LiF助熔剂生长，β-EuSc ₃ (BO ₃ ) ₄由固态合成获得。所有得到的晶体都表现出典型的 Eu ³⁺发光光谱，峰值分别在 589 nm、596 nm、615 nm、657 nm 和 689 nm，对应于⁵ D ₀ → ⁷ F _J ( J= 0、1、2 和 4) 电子跃迁。最强的发光峰位于 615 nm，对应于⁵ D ₀ → ⁷ F ₀跃迁。