助助硼硼混合法制备季系稀土硒酸盐晶体及其磁性和光学性质的研究

IF 3.4 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Habiba Binte Kashem, Gopabandhu Panigrahi, Gregory Morrison, Eric A. Gabilondo, P. Shiv Halasyamani, Pandu Wisesa, Theodore M. Besmann and Hans-Conrad zur Loye*, 
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引用次数: 0

摘要

采用助熔剂辅助硼硫混合物(BCM)法制备了一系列稀土硒化硅酸镁RE3Mg0.5SiSe7 (RE = Ce, Pr, Nd, Sm, Gd, Tb, Dy)单晶。用单晶x射线衍射测定了晶体的结构。RE3Mg0.5SiSe7系列在P63空间群中以六方晶系结晶。合成了多晶粉末并进行了物理性能测试。在2-300 K温度范围内的磁测量表明,Ce3Mg0.5SiSe7和Gd3Mg0.5SiSe7表现出负Weiss常数(θW =−14.50,θW =−6.13 K)的顺磁性行为。用紫外-可见漫反射法测定了RE3Mg0.5SiSe7 (RE = Ce, Pr, Nd, Sm, Gd)的光学性质。进行了密度泛函理论(DFT)电子结构计算。对Ce3Mg0.5SiSe7多晶粉末进行二次谐波产生测量,发现其具有SHG活性,效率为标准磷酸二氢钾(KDP)的0.11倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Crystal Growth of Quaternary Rare Earth Selenosilicates by Using the Flux-Assisted Boron Chalcogen Mixture Method: Investigation of Their Magnetic and Optical Properties

Crystal Growth of Quaternary Rare Earth Selenosilicates by Using the Flux-Assisted Boron Chalcogen Mixture Method: Investigation of Their Magnetic and Optical Properties

A series of rare earth magnesium selenosilicates, RE3Mg0.5SiSe7 (RE = Ce, Pr, Nd, Sm, Gd, Tb, Dy) were obtained as single crystal using the flux assisted boron chalcogen mixture (BCM) method. The structures of the crystals were determined by single-crystal X-ray diffraction. The RE3Mg0.5SiSe7 series crystallizes in the hexagonal crystal system in the space group P63. Polycrystalline powders were synthesized to perform physical property measurements. Magnetic measurements over the 2–300 K temperature range reveal that Ce3Mg0.5SiSe7 and Gd3Mg0.5SiSe7 exhibit paramagnetic behavior with negative Weiss constants (θW = −14.50, θW = −6.13 K, respectively). The optical properties of RE3Mg0.5SiSe7 (RE = Ce, Pr, Nd, Sm, Gd) were measured by ultraviolet–visible (UV–vis) diffuse reflectance. Density functional theory (DFT) electronic structure calculations were performed. A second harmonic generation measurement was performed on a polycrystalline powder of Ce3Mg0.5SiSe7 and was found to be SHG active with an efficiency of 0.11 times the standard potassium dihydrogen phosphate (KDP).

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来源期刊
Crystal Growth & Design
Crystal Growth & Design 化学-材料科学:综合
CiteScore
6.30
自引率
10.50%
发文量
650
审稿时长
1.9 months
期刊介绍: The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.
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