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X-ray diffraction study of the elastic properties of jagged spherical CdS nanocrystals
Materials Science-Poland ( IF 1.1 ) Pub Date : 2020-06-01 , DOI: 10.2478/msp-2020-0032
Pijush Ch. Dey 1 , Sumit Sarkar 1 , Ratan Das 1
Affiliation  

Abstract In this work, jagged spherical CdS nanocrystals have been synthesized by chemical method to study their elastic properties. The synthesized CdS nanocrystal has been characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The transmission electron microscope images show that the average size of the nanocrystal is 100 nm approximately. X-ray diffraction (XRD) study confirms that the CdS nanocrystals are in cubic zinc blende structure. The size calculated from the XRD is consistent with the average size obtained from the TEM analysis. The XRD data have been analyzed to study the elastic properties of the jagged spherical CdS nanocrystals, such as intrinsic strain, stress and energy density, using WilliamsonHall plot method. Williamson-Hall method and size-strain plot (SSP) have been used to study the individual effect of crystalline size and lattice strain on the peak broadening of the jagged spherical CdS nanocrystals. Size-strain plot (SSP) and root mean square (RMS) strain further confirm the results obtained from W-H plots.

中文翻译:

锯齿状球形硫化镉纳米晶弹性特性的 X 射线衍射研究

摘要 在这项工作中,通过化学方法合成了锯齿状球形 CdS 纳米晶体,以研究其弹性性能。合成的 CdS 纳米晶体已通过透射电子显微镜 (TEM) 和 X 射线衍射 (XRD) 进行表征。透射电子显微镜图像显示纳米晶体的平均尺寸约为100 nm。X 射线衍射 (XRD) 研究证实 CdS 纳米晶体为立方闪锌矿结构。从 XRD 计算的尺寸与从 TEM 分析获得的平均尺寸一致。使用威廉姆森霍尔图方法分析了 XRD 数据以研究锯齿状球形 CdS 纳米晶体的弹性特性,例如固有应变、应力和能量密度。Williamson-Hall 方法和尺寸-应变图 (SSP) 已被用于研究晶体尺寸和晶格应变对锯齿状球形 CdS 纳米晶体峰值展宽的影响。尺寸应变图 (SSP) 和均方根 (RMS) 应变进一步证实了从 WH 图获得的结果。
更新日期:2020-06-01
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