Three-dimensional spectral and spatial resolution of raman measurements in sapphire

IF 3.8 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2025-09-01 DOI:10.1111/jace.70202

A. Bellafatto, I. E. Reimanis

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Abstract

Raman spectroscopy affords a simple and practical tool to determine subsurface stresses in oxides via the identification of spectral peak locations. To access the full utility of the technique, it is necessary to understand and quantify the role of material-specific measurement parameters on the peak shapes and locations. This work employs systematic experiments on sapphire to examine how peak height and width influence peak identification for five different peaks: 378, 417, 576, 644, and 751 ${cm}^{- 1}$ , with 417 examined in both the R- and C-plane. Experiments are performed on the basal (0001) and rhombohedral (1102) planes of sapphire using different experimental magnifications. It is revealed that the accuracy of peak identification depends strongly on the wavenumber, due to peak-specific width and decreases with lower signal intensity. Basal plane sapphire leads to lower intensity and subsequently lower accuracy. The results are presented in a way that can be used to determine the statistical accuracy of stress measurements in sapphire by Raman spectroscopy.

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蓝宝石中拉曼测量的三维光谱和空间分辨率

拉曼光谱提供了一种简单实用的工具，通过识别光谱峰的位置来确定氧化物的地下应力。为了充分利用该技术，有必要了解和量化材料特定测量参数对峰值形状和位置的作用。这项工作采用蓝宝石的系统实验来研究峰高和宽度如何影响五个不同峰的峰识别：378、417、5776、644和751 cm -1 ${\rm cm}^{-1}$，其中417在R面和c面都进行了检查。实验在蓝宝石的基底（0001）和菱形面（1102）平面上使用不同的实验放大倍率进行。结果表明，由于峰比宽度的影响，峰识别的精度很大程度上取决于波数，并且随着信号强度的降低而降低。基面蓝宝石导致较低的强度和随后较低的精度。所得结果可用于确定蓝宝石拉曼光谱应力测量的统计精度。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.