Unveiling the structural properties of K2B4O7–Li2B4O7–TeO2–CuO glass: A comprehensive analysis using UV, EPR, FTIR and Raman spectroscopy

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-01 DOI:10.1016/j.optmat.2024.116425

T. Satyanarayana , K. Chandra Sekhar , K.M. Nissamudeen , Md. Shareefuddin

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引用次数: 0

Abstract

The present manuscript describes the preparation, characterization and discussions on the results of the K₂B₄O₇–Li₂B₄O₇–TeO₂ glasses modified with copper ions. Melt quenching method is used for the sample preparation and analyzed with various spectroscopic methods. The XRD spectra is obtained for angles ranging from 10° to 80° have no distinct peaks indicating an amorphous structure. The density of KLTC-0 (2.5239 gm/cc) K₂B₄O₇ free sample has more density than KLTC-40 (2.449 gm/cc) glass sample. The density of all the KLTC glasses is found to decrease this suggests that on incorporating K₂B₄O_7, the glass matrix is influenced The absorption spectra has shown distinct absorption edge in the vicinity of 400 nm and broad band around 780 nm. The 780 nm band associated with the transition from ²B_1g

\to

²B_2g.Non-bridging oxygen's rise with K₂B₄O₇ content is supported the decrease of optical band gap energies. FTIR and Raman spectra revealed the existence of various borate and tellurite groups. EPR studies confirmed that Cu²⁺ ions are in tetragonally distorted octahedral. Most of the ligand bonding is of ionic character.

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揭示 K2B4O7-Li2B4O7-TeO2-CuO 玻璃的结构特性：利用紫外光谱、EPR、傅立叶变换红外光谱和拉曼光谱进行综合分析

本手稿介绍了铜离子修饰的 K2B4O7-Li2B4O7-TeO2 玻璃的制备、表征和结果讨论。样品制备采用了熔融淬火法，并用各种光谱方法进行了分析。在 10° 至 80° 角范围内获得的 XRD 光谱没有明显的峰值，表明其为无定形结构。不含 K2B4O7 的 KLTC-0 （2.5239 gm/cc）样品的密度高于 KLTC-40 （2.449 gm/cc）玻璃样品。所有 KLTC 玻璃的密度都有所下降，这表明在加入 K2B4O7 后，玻璃基质受到了影响。780 nm 波段与 2B1g →2B2g 的转变有关，非桥氧随着 K2B4O7 含量的增加而增加，这与光带隙能的降低有关。傅立叶变换红外光谱和拉曼光谱显示了各种硼酸盐基团和碲基团的存在。EPR 研究证实，Cu2+ 离子处于四方畸变八面体中。大部分配体键为离子键。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.