Growth, Structure, and Optical Properties of the Cr3+:K0.6(Mg0.3Sc0.7)2(MoO4)3 Crystal

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• 作者：Guojian Wang ; Yisheng Huang ; Lizhen Zhang ; Shengping Guo ; Gang Xu ; Zhoubin Lin ; Guofu Wang
• 刊名：Crystal Growth & Design
• 出版年：2011
• 出版时间：September 7, 2011
• 年：2011
• 卷：11
• 期：9
• 页码：3895-3899
• 全文大小：812K
• 年卷期：v.11,no.9(September 7, 2011)
• ISSN：1528-7505

文摘

The Cr³⁺-doped K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal was grown from a flux of K₂Mo₃O₁₀ by the top seeded solution growth method. The K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal crystallizes in the rhombohedral system in space group R3c̅. The K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal has a highly disordered structure. Investigation of the spectral properties of the Cr³⁺:K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal shows that it exhibits broad absorption and emission bands, which are caused by the disordered structure of the K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal, except for the broad emission of Cr³⁺ ions. On the basis of the absorption and emission spectra, the crystal field strength Dq/B and Racah parameter C have been calculated. The Dq/B value of 2.18 implies that Cr³⁺ ion occupies the low crystal field site in the Cr³⁺:K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal. These results suggest that the Cr³⁺:K_0.6(Mg_0.3Sc_0.7)₂(MoO₄)₃ crystal is a potential tunable laser crystal material.